Unit 1 Energy

Front

True or False: A 30g baseball moving at 60mph has less kinetic energy than a 30g baseball moving at 10 mph.

Back

False

Front

What energy transformations occur when Alex stretches back the bow and releases the arrow? Options: elastic pe -> kinetic -> chemical -> thermal, kinetic -> GPE -> Chemical -> light, elastic pe -> kinetic -> GPE -> kinetic, chemical pe-> kinetic -> GPE -> mechanical

Back

elastic pe -> kinetic -> GPE -> kinetic

Front

Two balls are falling from the same height from a ladder. Both balls are falling at the same speed. Ball 1 has less mass than Ball 2. Which explanation best explains the transition that is taking place?

Back

Ball 2 has more gravitational potential energy because it has more mass. More mass means that gravity will have more of an effect on the amount of kinetic energy.

Front

What type of energy transformation occurs in our bodies as we eat pop tarts?

Back

chemical -> mechanical

Front

Correctly identify the types of thermal energy: Conduction, Convection, Radiation

Back

Convection, Conduction, Radiation

Front

At what point does the girl have the greatest amount of potential energy?

Back

At her highest point in the jump.

Front

Which two factors increase gravitational potential energy? Options: density and height, height and mass, mass and density, size and weight

Back

height and mass

Front

If you put a metal spoon and a wooden spoon into a pot of boiling water, one will become too hot to touch. Why?

Back

The temperature of the water does not matter because the wooden spoon would be an insulator and does not easily allow heat to pass through.

Front

As the pendulum moves from position A to position B, what energy conversion takes place?

Back

kinetic energy -> gravitational potential energy

Front

What best describes the transformation of energy as the snowboarder travels down the hill? Options: The snowboarder at “A” has the most kinetic energy as he begins downhill., The snowboarder at “B” has used up all his gravitational potential energy and is now creating kinetic energy to continue to move downhill., The snowboarder at “B” has used all his potential and kinetic energy and is slowing to a stop., The snowboarder at “C” has the least amount of gravitational potential energy and the greatest amount of kinetic energy

Back

The snowboarder at “C” has the least amount of gravitational potential energy and the greatest amount of kinetic energy