Energy Test Review Guide

What is the formula for kinetic energy?

K=(1/2)mv^2

Your body uses the chemical energy in the food you eat to make what kind of energy?

Kinetic

At that point, (where there is friction), some of the potential energy was NOT converted into?

Kinetic energy

What is the energy of motion called?

Kinetic energy

A hurricane is a heat engine (warm water mixing with cold water) and it converts one kind of energy to another. What kind of energy is the hurricane converting most of the heat into?

Mechanical

Define mechanical energy.

Mechanical energy is the sum total of potential and kinetic energy of a system.

In this process, plants use light energy to produce a new substance with chemical energy.

Photosynthesis

What is stored energy called?

Potential energy

In terms of potential and kinetic energy, label the potential and kinetic energy on the waterfall diagram.

Potential energy is at the top where the water is being held back; kinetic energy is when it is falling.

What is it called when electromagnetic waves travel through space?

Radiation

What kind of energy is caused by an object's vibrations?

Sound

After energy is converted from one form to another the total amount of energy is the same as the original amount of potential energy. What is the law called?

The Law of Conservation of Energy

The petroleum (oil) that we use for gasoline and plastics, to name a few uses, took millions of years to form from the remains of dead plants and animals, like dinosaurs or microscopic organisms. As you know, plants get their energy from the sun through photosynthesis. What can you conclude about fossil fuels?

The Sun is the original source of energy for oil.

When you completed the "Over the Hill" lab you needed to calculate the potential energy of your roller coaster. What information helped you to determine the potential energy?

The mass of the marble

Where was the greatest area of potential energy on a roller coaster?

The top of the first hill

You investigated motion using a marble on the roller coaster track. Suppose at the end of the roller coaster you may have placed some dominoes. Described the track you would use for the marble to push the dominoes the furthest.

The track with the steepest slope

When you use your hair dryer you are changing electrical energy into what kind of energy?

Thermal

Which of the following are NOT an energy resource: falling water, electric generator, heat inside the earth, or dead plants?

electric generator

When the air is warm or hot, the molecules _____ and the heat _____.

expand; rises

Petroleum or oil, coal, and natural gas are ____. They are ____.

fossil fuels; nonrenewable

Of the following resources, which is renewable: petroleum, wind, natural gas, or coal?

wind

When you change from one energy form to another it is called?

An energy conversion

When you change electrical energy into thermal energy (like when using the hair dryer). what happens?

An energy conversion.

What is a change from one form of energy to another called? Give an example.

An energy conversion; photosynthesis- light to chemical energy

Based on the ramp diagram, where on the ramp is the most potential energy?

At the top

Name a place on a roller coaster where there can be some friction.

Between the coaster's wheels and the track

Which energy can be a type of potential energy?

Chemical

Coal, which is another fossil fuel, is made of carbon. Power plants that make our electricity convert _____ energy into ____ energy.

Chemical; electrical

What is the transfer of heat between substances that are in direct contact with each other?

Conduction

What is the up and down movement of fluids (gases and liquids) caused by heat transfer?

Convection

When you wound up the rubber band on the Wacky Hall Walker, what type of energy did the rubber band have?

Elastic Potential Energy

Speaking of coal, what is the most common use of coal in the USA?

Electricity; generating electricity.

What is energy?

Energy is the ability to do work.

What is the type of energy an object has due to its position?

Gravitational Potential Energy

If you are stirring a hot pot of soup on the stove and you leave the metal spoon in the pot, the heat from the soup is transferred to the metal spoon through thermal (heat) energy and the spoon is?

Hot