Energy Transformations

What best describes the energy conversion that occurs when you turn on a hair dryer?

• chemical to thermal to light and sound
• electrical to kinetic to thermal and sound
• nuclear to electrical to thermal and sound
• kinetic to light to thermal and sound

If Jane flies a remote-controlled helicopter, what energy transformation makes the toy work?

• chemical to electrical to mechanical
• mechanical to electrical to chemical
• electrical to chemical to mechanical
• thermal to electrical to mechanical

An electric motor converts electrical energy into -

• kinetic energy
• light energy
• chemical energy
• thermal energy

What best describes the energy conversion that takes place in a microwave oven?

• electrical to thermal to sound
• chemical to thermal to light
• electrical to light to thermal
• nuclear to thermal to chemical

An old lady uses a fan to cool off on a hot day.  What type of energy conversion is occurring with the fan?

• electrical to mechanical
• heat to light
• electrical to light
• chemical to mechanical

Energy is the ability to do -

• nothing
• power
• work
• energy

What types of energy are involved with plugging in & turning on a toaster?

• nuclear, thermal, hydroelectric
• nuclear, mechanical, electrical
• thermal, mechanical, electrical
• chemical, electrical, mechanical

The waving hand of the man in the car is demonstrating what type of energy?

• thermal
• chemical
• mechanical
• radiant

The headlights on the car have this type of energy.

• thermal
• chemical
• mechanical
• radiant

The gasoline in the car has what kind of stored potential energy?

• thermal
• chemical
• mechanical
• radiant