Energy

 Muscles convert chemical energy into ___________ energy. 

• light
• nuclea
• electric
• mechanical

This roller coaster has potential energy when it is sitting at the top of the hill. As the cars move down the track, the potential energy changes into energy of motion. What kind of potential energy does the roller coaster have at the top of the hill? 

• Gravitational
• Mechanical
• Chemical
• Electrical

. Which is a way that you could demonstrate the transformation of mechanical energy into thermal energy? 

• Warm yourself in front of a campfire.
• Use an electric toaster to toast heat.
• Rub your hands together until they get warm.
• Use the magnified sunligth to set a piece of paper on fire.

Most of the electrical energy used by a toaster is converted to ______________ energy.

• light
• heat
• mechanical
• chemical

Which of the following statements is true according to the law of conservation of energy? a.  Energy cannot be created. b.  Energy cannot be destroyed. c.  Energy can be converted from one form to another. d.  All of the above e.  Only A and B

• Energy cannot be created
• Energy cannot be destroyed
• Energy can be converted from one form to another
• All of the above

The mechanical energy of an object equals its  a.  chemical energy plus its nuclear energy b.  kinetic energy plus its potential energy c.  nuclear energy d.  thermal energy

• chemical energy plus its nuclear energy
• kinetic energy plus its potential energy
• nuclear energy
• thermal energy

An object that has kinetic energy must be 

• moving
• falling
• elevated
• at rest

Which item stores chemical energy?

• spring
• battery
• rubber band
• insulated mug

As water is moving downstream toward the ocean, it has ____________ energy because it is moving.  

• heat
• solar
• chemical
• mechanical

A conductor of electrical energy ___________  that connects all parts of the electric circuits.

• battery
• lightbulb
• motor
• wire