WorksheetsENERGY: Transformations & Heat
Total questions: 13
Worksheet time: 23mins
1-2.
Answer the questions below after watching the video
When the hot molecules and the cold molecules mix together the energy of the cold molecules
increases because they start to move more
decreases because they stop moving
stays the same
What happens to the temperature of both substances after they mixed?
The temperature stayed the same
The temperature reached equilibrium
The temperature of both got colder
The temperature only increased.
The temperature of a substance increases as___.
the substance expands
the substance's volume increases
the average kinetic energy of its particles increases
the substance's mass increases
The movement of thermal energy from a warmer object to a cooler object is called:
heat
motion
temperature
momentum
Molecules are closest together in a
solid
liquid
gas
What term describes a liquid changing to a solid?
deposition
freezing
melting
evaporation
What is the process called when you add more energy to a substance?
melting
freezing
evaporation
condensation
On a cold rainy day a baby is touching a cold window. It feels so cold. Which way is the heat moving moving?
Cold is moving from the window to the hand.
Heat is moving from the hand to the window.
Heat doesn't move.
It moves in currents
Heat transfers from an area of ____temperature to an area of ___ temperature.
high to low
low to high
high to high
It can travel high to low and low to high.
10-11.
Answer the questions below after watching the video
How does this explain how convection works.
It demonstrates that hot fluids rise and cold ones sink
It demonstrates that hot fluids sink and cold ones rise
It demonstrates that they can mix together
It turned purple because cold water sinks and hot water rises.
True
False
A variety of energy transformations occur in different situations. Which of the following statements involves the change from chemical to electromagnetic to mechanical to sound energy?
A charcoal grill feels hot.
A basketball player throws a basketball.
A cell phone plays a video from YouTube.
The Sun heats the concrete of the sidewalk.
When a ball bounces, it has changing amounts of potential and kinetic energy. Eventually the ball will stop bouncing and come to rest. Which of the following best describes why the ball stops bouncing?
The ball’s energy is transformed into chemical energy.
The ball’s energy gets transformed to heat and sound energy.
The mass of the ball is too small to allow the ball to continue its own
motion.
The pull of gravity is stronger than the energy in the ball, which makes the
ball stop bouncing.
A student observes a beaker of room temperature water resting on a table. She states that the beaker of water does not have any energy. Which statement below is accurate regarding her observation?
She is correct because the beaker of water is not moving.
She is incorrect because the beaker of water has thermal energy.
She is incorrect because all water contains hydrogen and oxygen.
She is correct because the beaker of water is at room temperature.
Whenever there is a change of state, such as a solid to liquid or liquid to gas, heat energy can be added without a temperature change because
It doesn't need the extra energy
the added energy is lost
the change of state requires energy
the energy is lost to the atmostphere
