1
Energy obtained from flowing water is called _______.
hydroelectric energy
The energy associated with electric charges is called....
electrical energy
_______ energy is the energy stored in chemical bonds.
Chemical
______ energy is sunlight that is converted into usable energy.
______ is thermal energy from beneath Earth's surface.
Geothermal
_______ energy is a form of energy consisting of changing electric and magnetic fields.
Electromagnetic energy
_______ energy is the energy associated with the motion and position of everyday object.
Mechanical
What is energy?
The ability to do work.
A cell that generates electricity from a controlled reaction between hydrogen and oxygen is called a hydrogen ______ cell.
fuel
The potential energy of an object that is stretched or compressed is known as.....
elastic potential energy
An object slows down because friction causes a continual conversion of kinetic energy into ________ energy.
thermal
What is the term for the energy stored in atomic nuclei?
nuclear energy
TRUE or FALSE: Gravitational potential energy of an object increases as its height increases.
Both energy and work are usually measured in _______.
joules
At what point during a pole-vaulter's jump is his gravitational potential energy the greatest?
The highest point
TRUE or FALSE: Energy can be converted from one form to another.
True
_______ energy is the total potential and kinetic energy of all the particles in an object.
Thermal
________ energy is the chemical energy stored in living things.
Biomass
What is the difference in potential and kinetic energy?
potential-stored
kinetic-motion
a. increases
b. decreases
increases
The action of striking a match shows that stored chemical energy in the match can be converted into thermal energy and electromagnetic energy of the flame. Is this usually done in one step or multiple steps?
multiple steps
TRUE or FALSE: You can determine the kinetic energy of an object if you know its mass and its volume.
False
The gravitational ______ energy of an object is converted to the ______ energy of motion as the object falls.
potential....kinetic
Give an example of a nonrenewable and a renewable resource.
…...
What is stated by the law of conservation of energy?
Energy cannot be created or destroyed
How do we calculate gravitational potential energy?
PE = mgh
To conserve energy we can ________ need and ________ efficiency.
decrease.....increase
An object's gravitational potential energy depends on what 3 quantities?
mass, height, and acceleration due to gravity
What is the correct formula for kinetic energy?
KE = 1/2mv2
What is the difference in renewable and nonrenewable resources?
renewable- can be replaced easily
nonrenewable- takes too long