Energy PreTest

Newton's Law of Motion states that an object in motion stays in motion unless a force changes it. If you kick a ball, what force makes it stop?

• Gravity

• Friction

• Both gravity and friction

• Neither gravity and friction

Which of the following increases friction?

• Freezing rain on a road

• Wax on skis

• Air blowing up on an air hockey table

• Rubber soles on shoes

When you turn on a lamp, the electricity changes into what form of energy?

• Heat and light

• Sound and light

• Electrical and light

• Heat and electrical

When you place a metal spoon in boiling water, the handle becomes hot even though it is not touching the water. What kind of heat conduction is taking place?

• Conduction

• Convection

• Radiation

• All of the above

What task in the average home uses the most energy?

• Lighting

• Keeping food cold

• Washing and drying clothes

• Heating and cooling rooms

What type of light bulb is most efficient?

• Incadescent

• Compact fluorescent

• Halogen

• All light bulbs are the same

When you turn on the television, the electricity changes into which form of energy?

• Sound

• Light

• Heat

• All of the above

An increase in the motion of the molecules indicates an increase in which form of energy?

• Radiant energy

• Thermal energy

• Chemical energy

• Electrical energy

The human body uses the chemical energy in food to produce which form(s) of energy?

• Mechanical

• Chemical

• Thermal

• All of the above

All natural energy transformations can be traced back to which form of energy?

• Mechanical

• Chemical

• Nuclear

• All of the above