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What is energy?
The ability to do work
Four runners are in a race. What can you infer about the runner that crosses the finish line first?
The runner had the most energy.
The runner had the longest stride.
None of the above
The runner had the slowest speed.
What is a switch?
something that opens and closes a circuit
What is the most powerful form of light and heat?
Sun
How is sound created?
when an object vibrates
Sound can make objects move.
False
True
A hot air balloon is an example of what type of heat transfer.
conduction
radiation
convection
What is static electricity?
a build up of charges
What happens when a baseball player hits a ball?
the ball's energy and motion change
all of the ball's energy changes to sound
all of the bat's energy changes to sound
What form of energy is lightning?
heat
sound
all of the above
light
What is potential energy?
stored energy (no movement)
What is kinetic energy?
this is energy of motion.
John packed a flashlight for a camping trip. In terms of energy, what will the flashlight help him do?
it will change electrical energy into sound
it will change stored energy into light
it will change energy of motion into light
An egg frying in a pan is an example of what type of heat transfer.
convection
conduction
radiation
The heat felt from the sun is example of this type of heat transfer.
convection
radiation
conduction
What type of materials allow electricity to flow easily?
conductors
