Engergy & Motion

Energy can be classified into two main categories, kinetic energy and potential energy.  Kinetic energy is when an object is:

• standing still
• actively doing something
• changing states of matter
• objects do not have kinetic energy

Which is an example of potential energy?

• a roller coaster speeding down a hill
• the pulled back string on an archers's bow
• releasing the strings on a guitar
• an electric current lighting a light bulb

Choose the BEST answer that is an example of an energy transformation from potential energy to kinetic energy.

• a ball rolling down a ramp
• a picture hanging on the wall
• a swing swaying back and forth
• a coat hanging on a hook

Which of the following is an example of potential energy?

• a ball rolling down a ramp
• a stretched rubber band
• a baseball flying into the outfield
• a snail moving across a rock

Gasoline that powers a car is an example of...

• Nuclear energy
• Chemical energy
• Sound energy
• Light energy

Heat (thermal) energy is an example of...

• kinetic energy
• potential energy

All energy on earth begins

• with the heat produced by pressure inside the earth
• photosynthesis by producers
• with the sun
• with the magma inside the earth

Energy associated with the motion of particles in a substance.

• thermal
• radiant
• electrical
• chemical

The temperature of a substance increases as___.

• the substance expands
• the average kinetic energy of its particles increases
• the substance's volume increases
• the substance's mass increases

What does the average kinetic energy of an object's particles tell you?

• how hot the object is
• how cold the object is
• the temperature of the object 
• how fast the particles are moving