Definitions
Forms of Energy
Used Energy?
Energy Classifications
Planet Protection
100
Energy is... and it allows us to....
Energy is THE ABILITY OF AN OBJECT TO MOVE, HEAT UP, OR PRODUCE LIGHT. It allows us to MAKE OBJECTS MOVE FASTER, OR CHANGE DIRECTION.
100
What is the difference between kinetic energy and potential energy?
Kinetic energy is energy in the form of movement.
Potential energy is the form of potential movement. (Position.)
100
Can energy disappear?
Nope. Energy is transformed from one type to another.
Example: Batteries that use chemical energy can be put into a flashlight which is light energy.
100
What are non-renewable energy sources?
Energy from limited sources.
100
What happens if we use too much of our non-renewable energy sources?
We will not have enough for the future.
200
What is electrical energy?
Nuclear energy that is transforme to be used at home, and facilities. It is transferred through metal cables.
200
What is this an example of? Why?
Potential and kinetic energy. The ball is in motion, and is going higher up into the air.
200
Chemical energy stored in food and drinks is measured in ....
What are three foods that have alot of this stored energy?
Calories
red meat, cheese, nuts
200
Provide three examples of renewable energy sources, and non-renewable energy sources.
Renewable: Hydroelectric energy, wind energy, solar energy, biofuels
Non-renewable: Petroleum, coal, uranium, natural-gas.
200
What are the three R's? Can you explain them?
Reduce: buy products with minimal packaging
Reuse: Use plastic, glass, clothing/ old items over and over.
Recycle: Separate trash from glass, plastic, paper, and metal/aluminum.
300
True or false: (If false, correct the statement.)
Thermal energy is chemical energy stored in substances. Batteries use thermal energy, and our body requires thermal energy in the form of carbohydrates.
False.
Thermal energy is in the form of HEAT. When thermal energy is absorbed, things heat up. When it is released, the object cools down.
An example of this is heating buildings, and cooking food.
300
Energy stored in batteries is called...
This kind of energy is also stored in food, in the form of .....
Chemical energy.
Carbohydrates.
300
What transformation of energy is occuring in this picture? Why?
Chemical energy is being transformed into kinetic energy.
Calories are being used for movement.
300
True or false: We get nuclear energy from the sun in the form of light and heat. Solar panels transform this energy into potential energy.
False. We get SOLAR energy from the sun in the form of light and heat. Solar panels transform this energy into electrical energy.
300
How many tonnes of carbon dioxide are released into the environment every year?
21 billion tonnes! 21,000,000,000
400
The breakdown of radioactive materials results in... which is stored in.......
releases nuclear energy, which is stored in the atomic structures of all matter.
400
Provide 4 examples of light energy:
The Sun (natural), light bulbs, flash lights, street lights, computers, cars, torches/fire, camera ...
400
What happens to a fan when it is turned on?
Electrical energy is transformed into kinetic and thermal energy. The blades are moving, and the motor is getting hotter.
400
Biofuels come from..... and come in three different forms. What are they?
Plant and animal products.
They can be solid (BIOSOLIDS), liquid (BIOLIQUID) and gas (BIOGAS)
400
How do non-renewable sources damage our environment?
They are limited, and if we use too much we won't have enough.
They cause pollution in the air such as carbon dioxide and other harmful gasses.
500
What is hydroelectric elergy? What happens to it?
Hydroelectric energy is obtained from moving/falling water that is collected in a reservoir. It passes through a turbine and generates electricity.
500
True or false:
A car uses mechanical, light, thermal, electrical, and nuclear energy.
FALSE.
They do not use nuclear energy. However, cars move (mechanical) produce light (light) the engine heats up (thermal) and some environmental cars are gas free, and use electricity (electrical)
500
A lightning bolt is an example of...
Electrical energy transforming to light energy, thermal energy, and sound energy.
500
What are two differences between petroleum and coal? What are two similarities?
Petroleum is liquid, it's made of plants and animals, it's the source of fuel oil.
Coal is a solid rock, made of carbon.
Both are black, non-renewable energy sources burned to create electricity.
500
What does acid rain do?
Acid rain can hurt and kill fish and other wildlife.
Acid rain can also damage our lungs due to sulfur dioxide and nitrogen oxides.