Physics: 16-1, 17-1, 17-2, 17-3
The SI unit for energy is the_____.
Joule
____ is a unit of work.
Joule
Work and energy are both measured in _____.
Joules
The energy a moving object has is called_______.
Kinetic
The energy of a moving object is_______ energy.
Kinetic
The two types of mechanical energy are_____.
Kinetic and Potential
How high is a 0.1kg bird from the ground when its PE=3J? Formula:PE=mgh or PE=wh
PE=30m
A 60kg person walks from the ground to the roof of a 74.8m tall building. How much gravitational PE does she have at the top of the building? Formula: PE=mgh or PE=wh
PE=43982.4J
Energy that is stored due to shape or motion is called _______.
Potential
When chemical bonds are broken____ energy is released.
Thermal
Power is equal to work divided by______.
Time
Rate is any quanity/______.
Time
Coal has the most pollution. True or False?
True
Sound energy can not travel through empty space. True or False
True
A 50kg cheetah has a kinetic energy of 18,000J. How fast is it running? Formula: KE=1/2mv(2)
V=26.83m/s
A man used 20N of force to move an object 5m. How much work did he do? Formula: w=fd
100J
An example of electromagnetic energy is_______.
sunlight
An object does 500 J of work in 10 seconds. How much power is used? Formula: P=w/t
50W
Stored chemical energy of trees and other plants is _______.
Biomass
Energy is stored in the bonds between atoms is called____.
Chemical Energy
The saving of resources by using them more efficiently or not at all is called______.
Conservation
Work is the product of force and______.
Distance
The two types of potential energy are__________.
Elastic and Gravitational
Energy from movement of electric charges is______.
Electrical Energy
Xray, Infared, and light are all forms of _________ energy.
Electromagnetic
_____ energy is the energy that the sun and other stars release into space.
Electromagnetic
When energy changes forms a _________ has taken place.
Energy Conversion
Natural gas has the most pollution. True or False?
False
Splitting the atom is called nuclear_____.
Fission
The energy that occurs when two nuclei fuse together is called nuclear_____.
Fusion
Heat from below the Earth's surface is______ energy.
Geothermal
Another word for thermal energy is______.
Heat
What is the total kinetic energy of all the atoms that make up an object.
Heat
Thermal energy depends of how many atoms and ____________.
How fast they are moving.
Moving H20 is _______ energy.
Hydroelectric
What produces electricity by reacting hydrogen and oxygen.
Hydrogen Fuel Cell
When energy changes no energy is_____.
Lost
Kinetic is also known as ________ energy.
Mechanical
______ are resources from nature.
Natural
Coal, natural gas, and fossil fuels are all_______.
Nonrenewable Resources
Energy stored in the nucleus of an atom is called_______ energy.
Nuclear
______ is defined as the rate at which work is done.
Power
If the speed of an object doubles, its kinetic energy_____.
Quadruples
Sunlight is a ________ resource.
Renewable
Any kind of sunlight is _____ energy.
Solar
Energy of vibration is also called ______ energy.
Sound
Power plants______ the atom.
Split
Moving air is ______ energy.
Wind
Energy is defined as the ability to do______.
Work
In physics______ is only accomplished when a force acts on an object and causes the object to move.
Work