Question

choose the best answers.
1.7) ______ in science is the ability to do work.
a. energy
b. work
c. force
1.8) ______ in science is force applied to an object.
a. power
b. energy
c. work
1.9) ____ rotting food is an example of __ changes.
a. chemical
b. physical
c. kinetic
1.10) ______ what type of energy transformation takes place when a battery is added to a flashlight?
a. kinetic energy to electrical energy
b. chemical energy to mechanical energy
c. chemical energy to electrical energy to light energy
d. sound energy to electrical energy

Explanation:

1.7)

In science, energy is defined as the ability to do work. Work is the result of force over distance, and force is a push or pull. So the correct option is A.

Work in science is calculated as force applied to an object multiplied by the distance moved in the direction of the force. Power is work over time, and energy is the ability to do work. So the correct option is C.

Rotting food involves a change in its chemical composition (new substances are formed), so it's a chemical change. Physical changes don't change the substance's composition, and kinetic is a type of energy. So the correct option is A.

Answer:

A. Energy

1.8)