Transcript Bell Ringers with EQT Questions

Bell Ringers with EQT Questions
Second Semester Physical Science
With
Answers
Bell Ringer 1-7
• A train travels 100 kilometers in 4 hours.
Calculate its’ average speed.
• A. 10 km/h
• B. 20 km/h
• C. 25 km/h
• D. 50 km/h
Bell Ringer 2-7
• If the distance an object has traveled in a
certain amount of time is known, what can be
calculated?
• A. velocity
• B. acceleration
• C. force
• D. speed
Bell Ringer 3-7
• A car travels 300 kilometers in 3 hours. What
can be determined?
• A. velocity
• B. speed
• C. average speed
• D. acceleration
Bell Ringer 4-7
• A 300 N force acts on a 25 kg object. Calculate
the acceleration of the object.
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A. 100 m/s2
B. 60 m/s2
C. 30 m/s2
D. 12 m/s2
Bell Ringer 5-7
• A 3000N force acts on a 200 Kg object.
Calculate the acceleration of the object.
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A. 20 m/s2
B. 15 m/s2
C. 30 m/s2
D. 12 m/s2
Bellringer 6-7
• A student riding her bicycle on a straight, flat
road covers one block every 7 seconds. Make
a statement about her motion.
• A. her velocity is increasing
• B. her acceleration is increasing
• C. Her speed and velocity are constant
• D. her speed and velocity are increasing
Bellringer 7-7
• Two forces act on an object. One force has a
magnitude of 10 N and is directed toward the
North. The other has a magnitude of 5 N
directed toward the south. What is the net
force experienced by the object?
• A. 5 N south
• B. 15 N south
• C. 15 N north
• D. 5 N North
Bellringer 8-7
• A bird flies 150 m for 10 s , then 200 m for 10 s
and then 100 m for 5 sec. What is the birds’
average speed?
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A. 45 m/s
B. 18 m/s
C. 25 m/s
D. 200 m/s
Bellringer 9-7
• John is in Chicago, IL. He decides to head
south to Austin TX. In one hour he travels 80
km. What is his average velocity?
• A. 1.2 km/hr
• B. 80 km/hr
• C. 40 km/hr
• D. 80 km/hr south
Bellringer 10-7
• Maria is on a bus traveling 15 m/s east and
she decides to move from the front of the bus
to the back. She begins walking to the rear of
the bus at a rate of 1 m/s. What is her
resultant velocity?
• A. 16 m/s
• B. 15 m/s
• C. 14 m/s east
• D. 0 m/s
Bellringer 11-7
• A friend is helping Yen to rearrange her bedroom
furniture. Yen exerts 25 N of force to push the
foot-end of the bed while her friend exerts 20 N
of force pulling the head-end of the bed. What
net force is being used to move the bed?
• A. 25N
• B. 45 N forward
• C. 5 N forward
• D. 20 N forward
Bellringer 12-7
• What is the resultant net force of a force of 7N
north is combined with a force of 5N south?
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A. 12 N
B. 12 N south
C. 12 N north
D. 2 N north
Bellringer 13-7
• A man applies a force of 500 N to push a truck
10 m down the street. How much work has
been done?
• A. 500 J
• B. 5000J
• C. 50 J
• D. 50000J
Bellringer 14-7
• Carl rides his bike north for 100 m at a
constant speed of 5 m/s. What is his
acceleration?
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A. 500 m/s
B. 20 m/s
C. 5000 m/s
D. there is no acceleration
Bellringer 15-7
• A 20.0 N force is used to push a cart a distance
of 5.0 meters. How much work is done on the
cart?
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A. 4 J
B. 100 J
C. 50 J
D. 10 J
Bellringer 16-7
• Two children with the same mass face one
another while standing on their skateboards.
If they place their hands palm to palm and
skateboarder #1 pushes as hard as he can,
what will be the result?
• A. Both will move toward the east
• B. Both will move toward the west
• C. Both will roll
• D. Neither will move
Bellringer 17-7
• Given four objects massing 4 kg, 2 kg, 6000g,
and 1500 g. Which object will have more
inertia than a 5 kg object?
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A. 6000g
B. 100 g
C. 2 Kg
D. 2000g
Bellringer 18-7
• A ball is dropped from a rooftop. What is the
balls’ velocity after 3 seconds. Assume there is
no air resistance.
• A. 9.8 m/s
• B. 29.4 m/s
• C. 294 m/s
• D. 3m/s
Bellringer 19-7
• An apple falls from a tree. The gravitational
force on the apple is 1N. If air resistance is
0.1N, what is the net force on the apple?
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A. 1N
B. 1.1 N
C. 0.9 N
D. 0 N
Bellringer 20-7
• How much power does a person weighing 500
N need to climb a 3 M ladder in 5 sec?
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A. 1500 w
B. 500 w
C. 300 w
D. 30 w
Bellringer 21-7
• Classify this device: a slanted surface used to
raise an object.
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A. screw
B. inclined plane
C. wedge
D. lever
Bellringer 22-7
• Classify this device: an object that does work
with only one movement and changes the size
or direction of a force.
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A. compound machine
B. lever
C. simple machine
D. pulley
Bellringer 23-7
• Classify this device: a bar that is free to pivot
about a fixed point.
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A. screw
B. inclined plane
C. lever
D. pully
Bellringer 24-7
• How should one classify an inclined plane
wrapped around a cylindrical post?
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A. screw
B. lever
C. inclined plane
D. pulley
Bellringer 25-7
• Classify this device: two or more simple
machines working together.
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A. simple machine
B. compound machine
C. triple machine
D. poly machine
Bellringer 26-7
• A man expends 100 J of work to move a box up
an inclined plane. The amount of work produced
is 70J. Calculate the efficiency of the inclined
plane.
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A. 100%
B. 70%
C. 50%
D. 25%
Bellringer 27-7
• A boy pushes a lever 2 meters downward, and
a box on the other end of the lever moves
upward 2.5 meters. The boy uses 75 Newtons
to raise the 50 Newton box. Calculate the
efficiency of the lever.
• A. 100%
• B. 2.5%
• C. 83.3%
• D. 65%
Bellringer 28-7
• Classify this device: an arrangement of pulleys
designed to reduce the amount of effort force
required.
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A. wedge
B. block and tackle
C. harness
D. rings
Bellringer 29-7
• A ramp is classified as what type of simple
machine?
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A. wedge
B. screw
C. inclined plane
D. pulley
Bellringer 30-8
• What actions are most likely increase the
kinetic energy of an object?
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A. cut it in half
B. increase the mass and velocity
C. decrease the mass and velocity
D. all of the above
Bellringer 31-8
• Joe is jumping on a trampoline. What is his
energy level at the top of his jump?
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A. maximum kinetic
B. maximum potential
C. minimum kinetic
D. minimum potential
Bellringer 32-8
• Which of these vehicles has the most kinetic
energy? A large truck traveling at 30 m/s , a small
car traveling at 30 m/s, a minivan traveling at 45
m/s or a bicycle traveling
10 m/s?
a. a minivan traveling at 45 m/s
b. A large truck traveling at 30 m/s
c. A small car traveling at 30 m/s
d. A bicycle traveling at 10 m/s
Bellringer 33-8
• Which of these vehicles has the LEAST kinetic
energy? A large truck traveling 50 m/s, a small car
traveling 30 m/s, a minivan traveling 45 m/s or a
bicycle traveling 10 m/s?
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A. a large truck traveling 50 m/s
B. a bicycle traveling 10 m/s
C. a minivan traveling 45 m/s
D. a small car traveling 30 m/s
Bellringer 34-8
• What kind of energy would a stretched rubber
band most closely model?
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A. kinetic energy
B. potential energy
C. heat energy
D. nuclear energy
Bellringer 35-8
• What happens in the amount and kind of
energy when a pendulum swings in a
downward direction?
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A. potential goes to kinetic
B. kinetic becomes potential
C. no energy change
D. it stops
Bellringer 36-8
• A cart traveling on a roller coaster has both
potential and kinetic energy. Where will the
cart have the greatest potential energy?
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A. bottom of first hill
B. top of tallest hill
C. top of first hill
D. top of the last hill
Bellringer 37-8
• The cart is traveling forward on a roller
coaster. At what point will the cart have the
greatest kinetic energy?
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A. top of the tallest hill
B. bottom of the tallest hill
C. top of the middle hill
D. bottom of the last hill
Bellringer 38-8
• Consider a man winding his pocket watch.
Classify the energy he is storing in the watch
spring.
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A. potential energy
B. kinetic energy
C. elastic potential energy
D. elastic kinetic energy
Bellringer 39-8
• Choose the best description of kinetic and
potential energy.
• A. Kinetic is energy of position and potential is
movement
• B. Kinetic is static and so is potential
• C. Kinetic is energy of movement and
potential is energy of position
• D. none of these are descriptions of energy
Bellringer 40-8
• If the speed of an object is changed, what
effect will that have on the object’s potential
energy?
• A. It will increase
• B. It will decrease
• C. It will double
• D. It will not be affected
Bellringer 41-8
• A sample of water is at 1 degree C. Energy is
removed from the sample. What type of
change will occur with the water sample?
• A. it will heat up
• B. it will cool down
• C. it will loose volume
• D. it will not change
Bellringer 42-8
• What happens to the particles of matter
inside of a substance when that substance
loses or absorbs energy?
• A. the speed of the particles will not change
• B. it shrinks
• C. the speed of the particles always change
• D. it gets hot
Bellringer 43-8
• What type of process will a substance undergo
if it absorbs energy?
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A. exothermic
B. endothermic
C. it swells
D. is shrinks
Bellringer 44-8
• A solid is at its melting point. The substance
absorbs additional energy. What will happen
to the substance?
• A. the particles of the substance will increase
motion in the solid
• B. the particles of the substance will decrease
motion in the solid
• C. it will glow in the dark
• D. Nothing will occur
Bellringer 45-8
• Alex wants to change the state of matter in a
sample he has on the lab table. What will Alex
have to do to the sample to change its’ state?
• A. cool it down
• B. change its’ energy
• C. heat it up
• D. nothing will change the matters’ state
Bellringer 46-8
• A liquid becomes a gas. What molecular
changes must have occurred for this change to
happen?
• A. it heats up
• B. it cools down.
• C. it compresses
• D. the molecules move further apart
Bellringer 47-8
• To what is a high temperature in a substance
most closely related?
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A. high potential energy
B. high kinetic energy
C. low potential energy
D. low kinetic energy
Bellringer 48-8
• Through which states of matter is convection
of thermal energy most likely to occur?
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A. liquids and gasses
B. liquids and solids
C. solids, liquids and gasses
D. only solids
Bellringer 49-8
• If the coffee in a large cup is placed in the
microwave oven for 2 minutes, what is most
the likely cause for the increase in
temperature of the coffee?
• A. decrease in potential energy
• B. increase in potential energy
• C. increase in kinetic energy
• D. decrease in kinetic energy
Bellringer 50-8
• What property or characteristic of matter
must be present for a wave to travel through
that matter?
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A. light
B. energy
C. liquid
D. gas
Bellringer 51-9
• What property or characteristic must be
present for a wave to be able to travel?
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A. solid
B. Energy
C. Liquid
D. Gas
Bellringer 52-9
• What type of a wave is created by squeezing
together the coils of a spring and then
releasing the coils?
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A. transverse waves
B. compressional waves
C. longitudinal waves
D. Both B and C are correct
Bellringer 53-9
In what kind of wave do the particles of the
waves’ medium move only in the same
direction as the motion of the wave?
a.
b.
c.
d.
Compressional
Longitudinal
Transverse
Both A and B describe the wave
Bellringer 54-9
• Wave A and Wave B have the same
wavelength. Wave A carries more energy than
Wave B. What characteristic of wave A is
MOST likely responsible for its higher energy
level?
• A. frequency
• B. strength
• C. amplitude
• D. loudness
Bellringer 55-9
• What kind of waves are sound waves?
a.
b.
c.
d.
Transverse
Compressional/longitudinal
Short and high energy
They are not waves
Bellringer 56-9
• Electromagnetic waves can travel through
many media. To what type of wave are they
most closely related ?
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A. longitudinal
B. transverse
C. sound
D. microwaves
Bellringer 57-9
• Two electromagnetic waves have the same
amplitude, but one carries more energy than
the other. What characteristic of the waves is
different from each other?
• A. frequency
• B. strength
• C. length
• D. height
Bellringer 58-9
• What kind of force can transfer energy from
one place to another?
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A. wave
B. blast
C. laser beam
D. microwave
Bellringer 59-9
• What type of wave moves the particles of the
material through which it travels move at right
angles to the motion of the wave?
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A. longitudinal
B. transverse
C. compressional
D. microwave
Bellringer 60-9
• What type of electromagnetic wave has the
shortest wavelength?
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A. radio wave
B. x-ray
C. gamma ray
D. microwave
Bellringer 61-9
• Four types of waves have the same amplitude
and pass through a substance. Which type of
wave transfers the LEAST energy through the
substance?
• A. ultraviolet
• B. light
• C. microwave
• D. sound wave
Bellringer 62-9
• Four types of waves which have the same
amplitude pass through a substance. Which
type of wave transfers the MOST energy to the
substance?
• A. ultraviolet
• B. light
• C. microwave
• D. sound
Bellringer 63-9
COS 10-1
• How do the speed of light and the speed of
sound compare to each other?
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A. the speed of sound is faster
B. the speed of light is faster
C. the speed of sound is slower
D. the speed of sound is faster
Bellringer 64-9
COS 10-2
• Which kind of instrument would have the
following characteristics: a current carrying
coil of wire wrapped around an iron core?
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A. a battery
B. a radio receiver
C. an electromagnet
D. a night light
Bellringer 65-10
COS 10-3
• Which situation describes what happens when
a wire is passed through a magnetic field?
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A. an electric current is formed
B. it sparks
C. it plays music
D. nothing
Bellringer 66-10
COS 10-4
• What is the name of the process involved in
making a current flow when the electric current is
produced from the motion of a conductor in a
magnetic field?
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A. induction
B. transduction
C. rotational energy
D. conduction
Bellringer 67-10
• What observation or rule can you use to
describe what happens to magnetic poles
with different charges?
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A. opposites attract, opposite charges attract
B. opposites are repulsive
C. likes attract, like charges attract
D. likes are repulsive
Bellringer 68 COS 6-1
• What does the size of the gravitational force
between two objects depend upon ?
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A. mass of the object
B. distance between them
C. both the mass and distance
D. none of these
Bellringer 69 COS 6-2
• What happens to your weight as you get
farther from the center of the earth?
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A. it decreases
B. it increases
C. it stays the same
D. it doubles
Bellringer 70 COS 6-3
• What happens to the gravitational force
between two objects if the mass of one of the
objects is increased?
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A. it decreases
B. it stays the same
C. it increases
D. it doubles
Bellringer 71 COS 6-4
• What happens to the gravitational force
between two objects if the distance between
them is decreased?
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A. it increases
B. it decreases
C. it stays the same
D. it doubles
Bellringer 72 COS 6-5
• What happens to the gravitational force
between two objects if the distance between
them is increased?
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A. it increases
B. it decreases
C. it stays the same
D. it doubles
Bellringer 73 COS 6-6
• What types of objects experience gravitational
forces?
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A. only solid matter
B. all matter
C. only solids and liquids
D. only non radioactive matter
Bellringer 74 COS 6-7
• What types of objects on earth experience the
greatest gravitational force between them?
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A. those far away from each other
B. those attached to the magnetic poles
C. those closest together
D. they all fly away
Bellringer 75 COS 6-8
• Which objects experience the least
gravitational force between them on the
earth?
• A. those which are closest together
• B. Those who are attached at the magnetic
poles
• C. those which are farthest apart
• D. they all fly away
Bellringer 76 COS 6-9
• Protons are positively charged particles. Since
like charges repel each other, what force
prevents the protons in a nucleus of an atom
from repelling each other and scattering?
• A. strong nuclear force
• B. weak nuclear force
• C. the electrons won’t let them out
• D. the neutrons are attached to them in the
nucleus
Bellringer 77 COS 6-10
• Which of the following particles would repel
one another?
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A. Protons and protons
B. Protons and neutrons
C. Protons and electrons
D. electrons and neutrons
Bellringer 78 COS 6-11
• Which of the following particles would attract
one another?
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A. protons and protons
B. protons and electrons
C. protons and neutrons
D. electrons and neutrons
Bellringer 79 COS 6-12
• What type of force is involved in the process
of nuclear decay?
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A. strong nuclear forces
B. weak nuclear forces
C. the electrons won’t let them out
D. the neutrons
Bellringer 80 COS 11-1
• What is the name given to two atoms of the
same element that have different numbers of
neutrons, but same number of protons and
electrons?
• A. brothers
• B. isotopes
• C. isomer
• D. radioactive
Bellringer 81 COS 11-2
• Which radioactive particle or emission can be
stopped by a common piece of paper or even
a piece of card stock?
• A. alpha particle
• B. beta particle
• C. gamma ray
• D. x ray
Bellringer 82 COS 11-3
• Which type of radioactive particles is
considered the least penetrating ?
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A. alpha particle
B. beta particle
C. gamma ray
D. x ray
Bellringer 83 COS 11-4
• Which type of radiation is considered the
most penetrating and the most dangerous?
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A. alpha particles
B. beta particles
C. gamma rays
D. x rays
Bellringer 84 COS 11-5
• What event occurs when the strong nuclear
force is not sufficient to hold unstable nuclei
together?
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A. the nuclei fuse together
B. the nuclei decay
C. the nuclei find other types of radiation
D. the nuclei burn up
Bellringer 85 COS11-6
• Identify the following nuclear process: The
nuclei having low masses are united to form
nuclei with larger masses ( often occurs on the
sun)
• A. fission
• B. fusion
• C. decay
• D. formation of antimatter
Bellringer 86 COS 11- 7
• Which of the following is correct for
arrangement of the types of nuclear radiation
in increasing order of penetrating power?
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A. alpha, gamma, delta
B. alpha, delta, beta
C. alpha, beta, gamma
D. delta, omega, gamma
Bellringer 87 COS 11-8
• Which of the following situations describes
both a fusion reaction and a fission reaction?
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A. they make bigger particles
B. they make smaller particles
C. they use up energy
D. they give off energy
Bellringer 88 COS 11-9
• Which of the radioactive particles has neither
charge or mass?
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A. alpha particles
B. beta particles
C. gamma rays
D. x rays
Bellringer 89 COS 11-10
• Which of the radioactive particles is best
described by: a negatively charged particle
that is emitted at a high speed from a
nucleus?
• A. alpha particles
• B. beta particles
• C. gamma rays.
• D. x rays
Bellringer 90 COS 11-11
• Which of the following statements about
nuclear fusion is considered true?
• A. fusion is the joining of the nuclei of atoms
• B. fusion is the splitting of the nuclei of atoms
• C. fusion is the stripping of the electrons from
an atom
• D. fusion is not helpful or harmful
Bellringer 91 COS 11-12
• Classify the following process in which large
nuclei are split into smaller pieces.
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A. nuclear fusion
B. nuclear fission
C. building synthetic elements in the lab
D. nuclear chopping
Bellringer 92 COS 10-5
• What can be done to increase the magnetic
field of an electromagnet?
• A. increase the loops of wire
• B. increase the current
• C. increase both the loops of wire and the
current
• D. shorten the column
Bellringer 93 COS 10-6
• What is the difference between static
electricity discharge and an electric current?
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A. static discharge can not be felt
B. electric current is permanent
C. static discharge lasts for only seconds
D. electric current lasts for only seconds
Bellringer 94 COS 10-7
• How is a permanent magnet different from an
electromagnent?
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A. a permanent magnet can not be turned off
B. an electromagnet can not be turned off
C. a permanent magnent can be turned off
D. an electromagnent is permanent
Bellringer 95 COS 10-8
• If a wire is in an electromagnetic field, what
will the wire have to be doing to create a
current?
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A. standing still
B. moving through the field
C. making circles
D. dancing
Bellringer 96 COS 10-9
• How and when does an electromagnet
produce an electromagnetic field?
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A. it is always on
B. only when a current is applied to it
C. it doesn’t
D. when it does the loop to loop
Bellringer 97 COS 10-10
• Four electromagnets have the same electric
current passing through them. One with 50
loops, one with 200 loops, one with 750 loops
and one with 1000 loops. Which magnet will
produce the strongest magnetic field?
• A. 50 loops
• B. 200 loops
• C. 750 loops
• D. 1000 loops
Bellringer 98 COS 10-11
• What is a complete path through which
electric charges can flow?
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A. a conductor
B. a resistor
C. an electric circuit
D. a breaker
Bellringer 99 COS 10-12
• Which of the following materials will make a
good insulator?
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A. iron
B. silver
C. rubber
D. plastic
Bellringer 100 COS 10-14
• Which of the following objects would be
considered a good conductor of electricity?
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A. rubber
B. wood
C. plastic
D. iron
Bellringer 101 COS 10-15
• Which of the following objects will have the least
resistance: a 5 cm diameter wire, a 15 cm
diameter wire, a 20 cm diameter wire or a 25 cm
diameter wire?
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A. 5cm wire
B. 15 cm wire
C. 20 cm wire
D. 25 cm wire
Bellringer 102 COS 10-16
• Which of the following objects has the least
resistance: a 5 cm long wire, a 15 cm long
wire, a 20 cm long wire or a 25 cm long wire?
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A. 5 cm long wire
B. 15 cm long wire
C. 20 cm long wire
D. 25 cm long wire
Bellringer 103 COS 10-17
• Which of the following wires has the lowest
resistance: a short thick copper wire, a long
thin copper wire, a long thick copper wire, a
short thin copper wire ?
• A. a short thick copper wire
• B. a long thin copper wire
• C. a long thick copper wire
• D. a short thin copper wire
Bellringer 104 COS 10-18
• Which of the following is a conductor of
electricity: air, glass, water, or wood?
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A. air
B. glass
C. water
D. wood
Bellringer 105 COS 10-19
• A flashlight bulb has a potential difference of
4.5 V and a resistance of 8.0 ohms. Calculate
the current flowing through the filament.
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A. 0.56 A
B. 1.78A
C. 2.4 A
D. 0.056 A
Bellringer 106 COS 10-20
• How much current flows through a 2.0 ohm
wire with a voltage of 12.0 V ?
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A. 3.0 A
B. 6.0 A
C. 0.166 A
D. 0.0166 A
Bellringer 107 COS 10-21
• A light bulb has a resistance of 240 ohms
when operating at 120 V. Calculate the current
flowing through the light bulb.
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A. 2 A
B. 0.5 A
C. 5 A
D. 2.5 A
Bellringer 108 COS 10-22
• Two resistors with values of 4.0 ohms and 6.0
ohms are connected in parallel. Calculate their
equivalent total resistance.
•
•
•
•
A. less than 4.0 ohms
B. less than 6.0 ohms
C. less than 10 ohms
D. 2 ohms
Bellringer 109 COS 10-23
• Two resistors with values of 6.0 ohms and
6.0 ohms are connected in parallel. Calculate
their equivalent total resistance.
a.
b.
c.
d.
Less than 0 ohms
Less than 6.0 ohms
Less than 12.0 ohms
Less than 3 ohms
Bellringer 110 COS 10-24
• Three resistors with values of 4.0 ohms, 6.0
ohms, and 8.0 ohms respectively are
connected in series. Calculate their equivalent
total resistance.
• A. 10 ohms
• B. 18 ohms
• C. 2 ohms
• D. 100 ohms
Bellringer 111 COS 10-25
• What is the SI unit for resistance in electric
circuits?
•
•
•
•
A. ampers
B. ohms
C. watts
D. newtons
Bellringer 112 COS 10-26
• A bulb has a voltage of 9.0 volts and a current
of 0.3 amps passing through it. Using Ohms’
Law, calculate the resistance of the bulbs’
filament.
• A. 30 ohms
• B. 27 ohms
• C. 9 ohms
• D. 3 ohms
Bellringer 113 COS 10-27
• Examining two wires which have the same
length but have different diameters, which of
the wires would have the greatest resistance.
•
•
•
•
A. the skinny one
B. the fat one
C. the long one
D. the one with the smallest diameter
Bellringer 114 COS 10-28
• Resistance in an electrical wire can cause
some of the electrical energy in a wire to be
converted to what energy form?
•
•
•
•
A. potential
B. thermal
C. kinetic.
D. resistance