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Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

This appliance dries clothes primarily by converting —

• electrical energy to heat and mechanical energy

• mechanical energy to heat and electrical energy

• electrical energy to heat and light

• mechanical energy to heat and vaporization

When an egg is boiled in a pot of water on the stove, there is more than one kind of heat transfer. Heat is transferred from the stove to the pot directly since they are physically touching. Heat is also transferred from the pot to the egg, carried through the water. What two kinds of heat transfer are represented?

• Stove → Pot = radiation, Pot → Egg = conduction

• Stove → Pot = conduction, Pot → Egg = radiation

• Stove → Pot = convection, Pot → Egg = conduction

• Stove → Pot = conduction, Pot → Egg = convection

Which of the following devices transforms electrical energy into mechanical energy?

• An e-reader
• a fan
• a manual pencil sharpener
• ipod

A television works by transforming electrical energy into what other kinds of energy?

• Radiant, thermal, and sound

• Thermal, chemical, and solar

• Sound, mechanical, and radiant

• Light, chemical, and mechanical

What is energy?

• moving energy

• stored energy

• renewable energy

• The ability to do work.

Energy that is stored in bonds between atoms is:

• Mechanical energy
• Chemical energy
• Kinetic energy
• Nuclear energy

On a roller coaster, where is maximum kinetic energy?

• At the bottom of a big hill
• When going around a corner
• When going upside down
• At the top of a big hill

Why does the transfer of energy between two colliding things stop?

• Molecules stop transferring energy when colliding systems reach equilibrium

• When the two non-colliding things get equally hot molecules make energy

• Molecules make more kinetic energy until it is balanced

• The molecules of a system destroy energy when the system is balanced

The movement of thermal energy from a warmer object to a cooler object is called

• heat

• temperatur

• motion

• momentum