Transcript Clickers Review for Energy Forms and Transformations TEST

Clickers Review for
Energy Transformations
and Heat Transfer TEST
Please select a Team.
1. Team 1
2. Team 2
0%
1
0%
2
What causes warm air to rise and cold
air to sink?
1. A difference in
density
2. A difference in
climate
3. A difference in
weather
4. A difference in
substance
0%
1
0%
2
0%
3
0%
4
60
Sally is roasting a marshmallow over a campfire on
the end of a piece of wire. She knows that the
energy from the fire causes the molecules in the
end of the wire that are closest to the fire to move
faster. These molecules transfer some of their
extra kinetic energy to other molecules close by,
and these, in turn, affect still more molecules. Sally
knows that this method of energy transfer is
1. convection
2. condensation
3. radiation
0%
0%
0%
0%
4. conduction
60
1
2
3
4
What sort of energy is found in the
spring of a set mousetrap?
1.
2.
3.
4.
Kinetic energy
Potential energy
Nuclear energy
Chemical energy
0%
1
0%
2
0%
3
0%
4
60
In the EduSmart lesson Maya rubbed
her hands together when she was
cold. How could this energy
transformation be written?
1.
2.
3.
4.
Nuclear  Chemical
Physical  Thermal
Mechanical  Thermal
Electrical  Chemical
0%
1
0%
2
0%
3
0% 60
4
Jacob is standing with his back facing a
campfire. He notices that his back
is much warmer than his chest. He knows that
heat energy is being transferred from the fire
and that this method of energy transfer can
happen even if no air is present. This method of
energy transfer is —
1. convection
2. condensation
3. conduction
4. radiation
0%
1
0%
2
0%
3
0%
4
60
Which of the following is an example
of nuclear energy?
1. A magnet picking up
a paperclip
2. The sun shining
3. Burning coal
4. Steam turning a
turbine
0%
1
0%
2
0%
3
0%
4
60
During energy transformations some
energy is always transformed into …?
1.
2.
3.
4.
Thermal energy
Sound energy
Mechanical energy
Nuclear energy
0%
1
0%
2
0%
3
0%
4
60
A weight hanging from the ceiling is an
example of which state of energy?
1.
2.
3.
4.
Potential energy
Gravity energy
Nuclear energy
Kinetic energy
0%
1
0%
2
0%
3
0%
4
60
Which of the following is an example of
kinetic energy being converted to potential
energy?
1. On a factory assembly line, boxes slide
down a ramp.
2. The cord of a bow-and-arrow is
released, propelling the arrow
forward.
3. At an ice rink, an ice skater gives
another ice skater a gentle push.
4. A bike rider stops pedaling and lets his
bicycle coast up a hill.
60
0%
1
0%
2
0%
3
0%
4
A hot saucepan is placed on a cold bench.
Heat will flow from the saucepan to the
bench until
1.
2.
3.
4.
The bench is warmer than the saucepan
The bench is as hot as the saucepan
The saucepan has lost all heat
The saucepan and the bench are the same
temperature
60
0%
1
0%
2
0%
3
0%
4
Photosynthesis is the process by which
green plants use solar energy to
convert simple substances into
complex ones that contain _____
energy.
1.
2.
3.
4.
nuclear
geothermal
chemical
heat
0%
1
0%
2
0%
3
60
0%
4
Scientists have designed solar cells to
trap solar energy and convert it to
_____ energy.
1.
2.
3.
4.
hydroelectric
wind
electrical
chemical
0%
1
0%
2
0%
3
60
0%
4
Jason ate a granola bar and then went
for a run. He ran one mile and sweat
heavily. Jason's body transformed
chemical energy from the granola bar
into...
1.
2.
3.
4.
electrical and sound energy.
mechanical and light energy.
mechanical and heat energy.
electrical and heat energy.
0%
1
0%
2
0%
3
0%60
4
A softball is dropped off of the side of
a building. Ignore the effects of air
resistance. As the ball continues to fall
freely, the kinetic energy of the ball
1.
2.
3.
4.
remains the same.
equals zero.
decreases.
increases.
0%
1
0%
2
0%
3
0%60
4
The Cub Scouts are having their annual
Pinewood Derby Race. The unpowered
soap box racers are lined up at the top
of a hill and ready to begin. What gives
the cars their potential energy?
1.
2.
3.
4.
their wheels
gravity
their speed
friction
0%
1
0%
0%
2
3
60
0%
4
Study the diagram of the rollercoaster.
Position A is the starting point for the
rollercoaster. At which position will the
first rollercoaster car have the most
kinetic energy?
1.
2.
3.
4.
A
B
C
D
0%
1
0%
2
0%
3
60
0%
4
The wax of a burning candle is a fuel
that combines with oxygen in the air.
As the fuel is consumed, what happens
to most of the energy stored in the
bonds of the wax?
1. It is released as potential
energy.
2. It stays in the wax.
3. It is released as heat and light.
4. It is destroyed along with the
wax.
0%
1
0%
2
0%
3
60
0%
4
Which statement is true about energy
changes?
1. Energy can be destroyed
but not created.
2. Energy cannot be created
or destroyed.
3. Energy can be created but
not destroyed.
4. Energy can be created
and destroyed.
0%
1
0%
2
0%
3
0% 60
4
Bobby is drinking a cup of hot chocolate as he
sits by a campfire on a chilly evening. He knows
that the cup of hot chocolate transfers thermal
energy to the surrounding air. The heated air
over his cup of hot chocolate expands and rises
and is replaced by cooler, denser, air. This
method of energy transfer is1.
2.
3.
4.
Convection
Condensation
Conduction
Radiation
60
0%
1
0%
2
0%
3
0%
4
Countdown
An ice cube is placed onto a hot pan
that is sitting on the countertop.
How will the heat energy move?
1. The coldness will move
from the pan to the ice
cube.
2. The coldness will move
from the ice cube to the
pan
3. The heat will travel from the
pan to the ice cube
4. The heat will move from the
ice cube to the pan
0%
1
0%
2
0%
3
0%
60
4
Countdown
Team Scores