Energy Sources
Which device uses light energy?
A. Drums B. Lamp C. Iron
Lamp
Faster objects have more what?
Energy
What happens when one marble hits another?
Energy transfers
Which devices change electrical energy into sound?
A. TV B. Pen C. Radio
A and C
What is the bouncing of light?
Reflection
What energy warms food in a microwave?
Thermal or Heat Energy
Why does a kicked ball travel farther?
more energy was used
more force!
What does speeding up after a collision show?
Energy Transfer
What energy shows a pencil sharpener converts energy?
A. Friction B. Sound C. Light
B sound
What is the bouncing of sound?
Echo
Which object warms nearby air most?
A. Toaster B. TV C. Washer
Toaster
Which car is faster if it goes farther in the same amount of time? The car that traveled shorter or further?
the car that traveled farther
If a person is bowling and they knock down all of the pins, was their a lot of friction?
No
Batteries in game systems change electrical energy into what?
Light and sound
Something that is NOT see through at all is?
Opaque
What energy causes dripping water sounds?
Sound energy
Why did the pool ball travel farther?
it was hit harder and with more energy
Why did the soccer ball move after collision?
Force which created an energy transfer
Which device changes electrical energy into heat?
A. Tv B. Remote C. Oven
Oven
Bending of light is know as?
Refraction
Why does a skillet get hot on a stove?
Thermal or Heat Energy
Moving objects have more energy when they move faster. True or False?
True
True or False: collisions can transfer energy.
True
What energy changes happen in a remote-control car?
Electrical - motion - sound
Something PARTIALLY see through?
Translucent