Transcript No Slide Title

Waves
Energy
Force and
Motion
Universe
Velocity and
acceleration
Random
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1 - 100
In a longitudinal/
compression waves the
motion of the medium is
_____________ to the
motion of the waves
1 - 100
一丁目
Parallel
What are the
differences between
radio waves and
gamma rays?
1-200
Radio waves= long
wavelength, low energy,
low frequency
1 - 100
Gamma rays= short
wavelength, high energy,
high frequency
A sound wave
cannot be
transmitted
through a
__________
1 - 100
vaccum
In a compressional
wave, motion of the
medium is ________
to the motion of the
wave.
1 - 100
Parallel
If the wavelength of a
wave is 10 meters and
it takes 2 seconds for
every crest to pass.
What is the velocity of
the wave?
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1 - 100
5 meters per
second
Heat transfers
from ______
object to
_______
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2-100
1 - 100
Warm object
to cold object
Rubbing two things
together is an example
of converting
___________ energy to
___________ energy
2-200
1 - 100
Mechanical
energy to
thermal energy
What is the
potential energy of
a 100kg person
standing 10 meters
above the surface?
けっこん式
9800 Joules
All of these will increase
kinetic energy except:
A. Increase mass
B. Increase velocity
C. Increase height
D. Decrease friction
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C
A pot sitting on a
hot burner is an
example of what
kind of heat
transfer?
2-500
1 - 100
Conduction
When you push a
penny across a long
table, the penny comes
to a stop. What force
brings the penny to a
stop?
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1 - 100
Friction
Soccer ball is 500g
Basketball is 700g
You kick a soccer ball and
a basketball with equal
force. Compare the
soccer ball and basketball
in terms of acceleration
Soccer ball will
accelerate faster
than a basketball
because it has less
mass
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It takes a certain force to
accelerate a rollercoaster
cart at 5m/s/s. How much
force would it take to
accelerate a cart half the
mass to 5 m/s/s
3-300
1 - 100
Half as much
force
What is the net force?
300N
1,000N
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700N to the
right
As you sit on a chair,
the force of gravity
acts downward on
your body. The
reaction force is
_________________
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Force of the
chair pushing
you upward
What are two
factors that affect
the amount of
gravitational force
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4-100
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Mass and
distance
During this process,
a heavy element is
broken down into
lighter elements
4-200
1 - 100
4-200A
Nuclear
fission
What are the
evidences
supporting the Big
Bang Theory?
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-Universe is expanding
(red shift)
-Cosmic Background
Radiation
-Abundance of
hydrogen
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4-300A
This force keeps
the moon in orbit
around the earth
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4-400A
Gravitational
Force
What is nuclear
fusion? Give an
example
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4 hydrogen combine to
form 1 helium. It
produces large amount
of heat and light.
Ex: Stars and
Supernova
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4-500A
A car travel from
Columbus to Akron,
a distance of about
200km in 2 hours.
The car’s average
speed is..
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5-100A
V=d/t
V=200/2
V=100km/h
If the net force
acting on a 200 kg
object is 4000N,
what is the object’s
acceleration
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A=F/m
A=4000N/200
kg
A=20m/s/s
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5-200A
5-300
At which point is the
object at rest?
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5-400
Acceleration can be
change in ________ and
change in ___________
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5-400A
1. Velocity and Direction
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Describe the object’s
motion
1.
2.
3.
4.
5.
6.
Accelerate away from the origin
Move at a constant velocity
Slow down (negative
acceleration) and stop for an
instant
Turn back and accelerate the
other way
Move at a constant velocity
Slow down (negative
acceleration)
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5-500A
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6-100
Compared to wave X, which statement is
correct?
A.
Wave Y has greater speed.
B.
Wave Y has less energy.
C.
Wave Y has a lower frequency.
D.
Wave Y has a shorter wavelength.
D
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6-100A
If a person weighs
600N and he is lifted
up to 3 meters what
is the gravitational
potential energy?
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GPE=mgh
GPE=weight x h
GPE=600N x 3m
GPE= 1800J
1 - 100
6-200A
6-300
What
are the
missing
terms
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6-300A
6-400
During which time interval did the
person have the greatest velocity?
From 1 to 3
seconds
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6-400A
What keeps the
rocket moving
at a constant
rate
A.Inertia
B.Unbalanced
forces
C.Gravity
D.Sheer will
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A. Inertia
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6-500A
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