MISA - Maryland Integrated Science Assessment Energy Forms and Conversion Questions and Answers

Question 1

A student uses a battery-powered flashlight to see in a dark room. Which of the following describes the primary energy conversions that take place?

Accepted Answer

Chemical energy to electrical energy to light and thermal energy

Answer

Electrical energy to thermal energy to light energy

Answer

Kinetic energy to electrical energy to light energy

Answer

Radiant energy to chemical energy to electrical energy

Question 2

In a hydroelectric power plant, a dam holds back a large volume of water in a reservoir. When the water is released, it flows through a turbine, which spins a generator to produce electricity. What is the correct sequence of energy transformations in this process?

Accepted Answer

Potential energy → Kinetic energy → Electrical energy

Answer

Kinetic energy → Electrical energy → Potential energy

Answer

Thermal energy → Mechanical energy → Electrical energy

Answer

Chemical energy → Kinetic energy → Electrical energy

Question 3

A student drops a rubber ball from a height of one meter. The ball bounces back up, but not to its original height. According to the Law of Conservation of Energy, what best explains why the ball does not reach its starting height?

Accepted Answer

Some mechanical energy was converted into thermal and sound energy.

Answer

Some of the ball's energy was destroyed during the bounce.

Answer

The ball did not have enough kinetic energy to begin with.

Answer

The force of gravity on the ball decreased after the bounce.

Question 4

Photosynthesis is the process plants use to make their own food. What is the fundamental energy conversion that occurs during photosynthesis?

Accepted Answer

Radiant energy is converted into chemical energy.

Answer

Thermal energy is converted into kinetic energy.

Answer

Chemical energy is converted into radiant energy.

Answer

Kinetic energy is converted into potential energy.

Question 5

Which of the following scenarios is the best example of elastic potential energy being converted into kinetic energy?

Accepted Answer

A stretched rubber band being released to fly across a room

Answer

A car accelerating on a flat road

Answer

A rock sitting at the top of a cliff

Answer

A candle burning and giving off light

Question 6

A student pushes a heavy box across a rough floor. After the student stops pushing, the box slides for a short distance and then stops. The student observes that the bottom of the box and the floor feel slightly warmer. This is because the box's kinetic energy was converted primarily into:

Accepted Answer

thermal energy.

Answer

potential energy.

Answer

chemical energy.

Answer

radiant energy.