Energy

As a roller coaster goes downhill:

• kinetic energy is converted into potential energy.

• potential energy is converted into kinetic energy.

• electrical energy is converted into potential energy.

• potential energy is converted into electrical energy.

The maximum kinetic energy of a box sliding from the top of a ramp to the bottom is

• at the top.

• at the bottom.

• at the exact middle of the ramp

• stored equally within the box at all locations.

According to the law of conservation of energy,

• an object loses most of its energy as friction.

• the total amount of energy for a closed system stays the same.

• the potential energy of an object is always greater than its kinetic energy.

• the kinetic energy of an object is always greater than its potential energy.

A generator converts mechanical energy into _____________________ energy.

• chemical

• electrical

• light

• sound

You take a glow stick, crack the capsule inside, and shake it until it glows. This is an example of light energy being transformed from ___________________ energy.

• chemical

• mechanical

• thermal

• soluble

An example of friction being converted into heat energy is

• the sun

• a generator

• rubbing your hands together

Which is an example of electrical energy being converted or changed into light energy?

• the sun

• a light bulb

• a solar panel

• a glow stick

A solar powered car converts _______________ energy into _________________ energy.

• light, chemical

• light, mechanical

• mechanical, light

• chemical, light

Your hands get warm by a fire because ________________energy is converted into heat energy.

• chemical

• mechanical

• light

• nuclear

The law of conservation of states that

• energy and matter may be created, destroyed or transformed.

• energy or matter may be created, but only in certain types of nuclear reactions.

• energy and matter may neither be created nor destroyed; only be transformed.

• the energy or matter created by one process must be equal to that destroyed by another process.