A
B
C
D
100
The ability to do work or cause change is called
Energy
100
Give an example of something that stores chemical energy is
match, gas, food
100
A compressed spring has _________________ energy.
Elastic potential
100
Define the law of conservation of energy.
Energy cannot be created or destroyed, only transformed.
200
Kinetic energy depends on ___________ and ____________.
mass and speed
200
As water runs over a waterfall, its potential energy is converted to
mechanical energy
200
A nuclear reaction in which the nuclei of atoms join together is called
nuclear __________.
Fusion
200
Why is your house warmer on the top floor and colder in the basement?
Convection, warm air rises and cold air sinks.
300
Identify the form of thermal energy transfer in the picture, which shows warm water rises and cooler water sinks.
Convection
300
Energy stored in the nucleus of an atom is called
nuclear energy
300
What letter represents the position at which the basketball has the greatest GPE? Explain.
C, it is the farthest away from the ground.
300
You feel warm while you are sitting in front of a fireplace. What energy heat transfer is occurring?
Radiation
400
Identify the type of thermal energy transfer in the picture of a person who can feel heat waves from the fire without touching the flames.
Radiation
400
What type of energy transformation is taking place when natural gas is used to heat water?
chemical energy into thermal energy
400
A 15 kg boulder was rolling down a hill at 5 m/s. What was the boulder's kinetic energy? Identify the mass and speed.
Mass: 15 kg
Speed: 5 m/s
KE: 187.5 Joules
400
A pot of water boils on a hot stove. Identify conduction, convection, and radiation.
Conduction: Pot on the stove
Convection: The water in the pot circulating
Radiation: The heat you can feel by placing your hand above the pot
500
To maintain your body temperature (heat), your body converts chemical potential energy into _______ energy.
thermal
500
Inside a hydroelectric dam, water forces turbines to move and generate electric power. What type of energy transformation is taking place?
mechanical energy to electrical energy
500
Where does the pendulum have the most kinetic energy?
C
500
Explain how the law of conservation is seen in the swinging of a pendulum.
Energy transforms from potential to kinetic throughout the swing. Some energy is released as sound energy and the friction is released as thermal energy.