Renewable and Nonrenewable resources & Kinetic Energy
Types of Energy/Light
100
It took Alicia 30 minutes to run around her neighborhood. Which other variable does Alicia need to know in order to calculate her speed?
a. force b. velocity
c.distance d. temperature
C. Distance
100
When two equal forces act in opposite directions on an object, they are called
A. action forces
B. reaction forces
C. Unbalanced forces
D. Balanced forces
What is a balanced force
100
Which has potential energy?
a. A running deer
b. rolling bowling ball
c. stretched rubber band
d. parked car at the bottom of the hill
What is a stretched rubber band
100
From which source do most forms of energy originate?
a. windmills
b.electric currents
c.power plants
d. the sun
What is the sun
200
An object accelerates when it is acted on by what?
a. balanced force
b. unbalanced force
c. velocity
d. inertia
What is an unbalanced force
200
What happens to an object that is acted upon by unbalanced forces?
a. It stops moving
b. It changes its motion
c. It gets cold
d. It gets hot
What is "it changes its motion"
200
A man sits on a coil mattress. Which type of energy does the mattress have while he is sitting on it.
A. kinetic energy
B. elastic potential energy
C. Chemical potential energy
D. Gravitational potential energy
What is elastic potential energy
200
Kinetic energy
A.The energy of a moving object
B. The energy that is stored in the position or the structure of an object
C. A resource that can be used up faster than it is made object to
D. A resource that can be replaced naturally in a short amount of time.
What is the energy of a moving object
200
Little or no light passes through this object.
What is opaque
300
If a car takes five hours to travel 150 miles, what is the average speed of the car?
a. 25 mph
b. 20 mph
c. 30 mph
d. 35 mph
What is 30 mph
300
If air resistance weren’t a factor, what would happen if you released a feather and a ball at the same time?
A. The feather would hit the ground first
B. The ball would hit the ground first
C. Both objects would hit the ground at the same time.
D. Both would hit the ground with equal force.
What is Both objects would hit the ground at the same time. If air resistance isn’t a factor all objects fall at the same rate.
300
Which of the following has gravitational potential energy?
A. an unlit log in a fireplace
B. A wagon at the top of a hill
C. a ball at the bottom of a ramp
D. A car that is beginning to move
What is a wagon at the top of a hill
300
A train is speeding along a track. What is this an example of?
a. potential energy
b. light energy
C. stored energy
d. kinetic energy
What is kinetic energy
300
Which best describes how energy changes in a toaster?
a. chemical to heat
b. mechanical to light
c. electrical to heat
d. electrical to chemical
What is Electrical to heat
400
A vehicle traveled a distance of 200 miles in 2 hours. What was the average speed of the vehicle?
a. 150 mph
b. 100 mph
c. 175 mph
d. 200 mph
What is 100 mph
400
According to Newton’s law of universal gravitation, the force of gravity depends on
A. Acceleration and distance B. Distance and mass C. Mass and velocity D. Velocity and inertia
What is distance and mass
400
Which of the following has chemical potential energy?
a.An unlit log in a fireplace
b.A person about to jump off a diving board into a swimming pool
c.A ball at the bottom of a ramp
d.A spring that has been compressed
What is an unlit log in a fireplace
400
One example of a nonrenewable resource is
a. Living things
b. Hot springs
c. Coal
d. Biomass
What is coal
400
How does energy change when you switch on a flashlight?
a. chemical to electrical to light
b. electrical to heat to light
c. chemical to heat to mechanical
d. electrical to chemical heat
What is Chemical to electrical to light.
The batteries in the flashlight have chemical energy, which is changed to electrical and then light energy.
500
Unbalanced force
A. When forces act on an object without changing its motion
B. A resource that can be replaced naturally in a short amount of time.
C. A force that causes an object to change its motion
D. Change in position over time
What is A force that causes an object to change its motion
500
Two children climb onto a seesaw. What can an observer conclude if the left side of the seesaw moves down?
A. One child has more gravity, resulting in an unbalanced force.
B. Both children have the same mass, resulting in a balance force
C. The child on the right has more mass, resulting in unbalanced force
D. The child on the left has more mass, resulting in an unbalanced force.
What is The child on the left has more mass, resulting in unbalanced forces.
500
Which of the following has chemical potential energy?
a. A ball that has just been thrown
b. An apple that is about to be eaten
c. A skydiver who is about to jump from an airplane
d. A bungee cord that has been stretched around a suitcase
What is "An apple that is about to be eaten"
500
Which list contains only renewable sources?
a. Oil, coal, natural gas
b. Coal, wind, solar energy
c. Wind, solar energy, moving water
d. Nuclear energy, fossil fuels, geothermal energy
What is Wind, solar energy, moving water
500
You shine a flashlight on a chair to make a shadow. Your friend moves the chair farther away from the flashlight. What happens to the shadow?
a. The shadow changes shape.
b. The shadow does not change.
c. The size of the shadow becomes larger.
d. The size of the shadow becomes smaller.