Types of Energy
What are the 2 main types of energy?
Potential and Kinetic
* Potential or Kinetic *
Standing at the top of a slide.
Potential
What are the energy transformations in a lamp?
Electrical
Radiant
Thermal
Almost all of the energy we use can be traced back to the __________.
Sun
The Law of Conservation of Energy states that energy cannot be __________ nor __________; it can only change from one form to another.
created, destroyed
Kinetic energy is energy of __________.
Potential energy is __________ energy.
Motion and Stored
* Potential or Kinetic *
Rolling down a grassy hill.
Kinetic
What are the energy transformations in a flashlight?
Chemical
Electrical
Radiant
An energy resource that is available in unlimited amounts and is replaced as fast as it is used.
Renewable Energy Resource
Energy is measured in __________.
Joules
A book sitting on a shelf has this type of energy.
Gravitational Potential Energy
* Potential or Kinetic *
A speeding car.
Kinetic
What are the energy transformations in a blender?
Electrical
Mechanical
Sound
The most commonly used nonrenewable energy resources are __________. Three examples are __________.
Fossil Fuels
1. coal
2. oil
3. natural gas
* True or False *
The total amount of energy in the universe changes every day.
False
This type of energy is stored in a rubber band.
Elastic Potential Energy
* Potential or Kinetic *
A roller coaster car at the top of a hill.
Potential
Name the force that resists the sliding of two surfaces that are touching.
There is always some of this between any two surfaces that are rubbing against each other.
Friction
Which fossil fuel is burned to create electricity at electric power plants?
Coal
* True or False *
As an object falls, its potential energy is lost to the air around it.
False
What is the total energy of an object or group of objects due to large scale motions and interactions?
It is the sum of all the potential and kinetic energy in a system.
Mechanical Energy
* Potential or Kinetic *
An archer has pulled back the string of their bow, ready to release the arrow.
Potential
Describe the energy transformations that take place when a ball is thrown into the air and falls back to the ground.
As the ball rises, the potential energy increases while the kinetic energy decreases.
As the ball falls back to the ground, the potential energy decreases and the kinetic energy increases.
The total amount of energy does not change.
Which 2 fossil fuels are formed from microscopic ocean-organisms that died and sank to the ocean floor?
Petroleum and Natural Gas
If a lamp has 5.8 joules of energy when you turn it on.
How many joules are remaining after the lamp has been on for 3 hours?
5.8 joules