38 questions
Energy stored because of gravity is called:
Gravitational Potential Energy
Kinetic Energy
Mechanical Advantage
Chemical Energy
At which point does the ball has the greatest gravitational potential energy (GPE)?
A
G
D
C
G
Which would have the LEAST gravitational potential energy (GPE)?
A ball sitting on the ground
Moon viewed from the Earth
An airplane flying 30,000 feet above the ground
A rock sitting on top of Mt. Everest
How could you increase the gravitational potential energy of an object without changing its mass and gravity?
Make the object larger
Lower the object towards the ground
Raise the object farther off the ground
Allow the object to roll on the ground
How could you increase the object's gravitational potential energy (GPE) without changing its distance from the ground (height) and gravity?
Decrease the object's mass
Increase the object's height
Increase the object's mass
Decrease the object's height
____________ is the ability to do work.
Energy
Force
Friction
Motion
You throw a ball into the air as shown in the diagram. At what point does the ball have the most gravitational potential energy?
W
X
Y
Z
At which position does the child on the swing have the most gravitational potential energy?
W
X
Y
Z
At which point on the roller coaster is the gravitational potential energy the greatest?
W
X
Y
Z
Which is the correct unit for expressing gravitational potential energy?
Joule
Newton
m/s2
meter
Which of the following is the correct equation for calculating an object's gravitational potential energy?
PE = mgh
PE = mg / h
PE = mg + h
PE = gh
What is the value of the Earth's acceleration due to gravity (g)?
9.8 m/s2
100 m/s2
25 m/s2
3.14 m/s2
Vicky was walking with a helium balloon when the balloon's string slipped out of her hand. The balloon floated toward the sky. Complete the statement. Assume that the balloon's mass did not change.
The GPE stored between the balloon and earth __ as the balloon floated toward the sky
increased
decreased
stayed the same
Gravitational potential energy depends on the strength of gravity, ________ and ________ of the object.
height and mass
friction and movement
mass and movement
height and friction
True or False. Energy cannot be created or destroyed, rather it is transformed from one energy type to another.
True
False
When you eat food, your body gains ___________ energy.
electrical
chemical
thermal
light
What type of energy can be sensed by the eyes?
sound
thermal
electrical
light
What word or words describes kinetic energy?
Energy of position
stored energy
movement
not moving
Fire is an example of what two energies?
Electrical and Sound
Mechanical and Sound
Light and Thermal
Chemical and Elastical
A stretched rubber band represents what type of potential energy?
gravitational potential energy
elastic potential energy
chemical potential energy
kinetic potential energy
At which position does the child on the swing have the most gravitational potential energy?
W
X
Y
Z
Which object has elastic potential energy?
a hanging leaf
a burning coal
a rolling ball
a stretched bow
Which type of energy is stored energy?
Potential Energy
Kinetic Energy
This type of potential energy can be found in rubber bands and springs.
Chemical
Elastic
Gravitational
Kinetic energy is measured in
Newtons (N)
Joules (J)
Kilograms (kg)
miles per hour (mph)
The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?
mechanical to heat
sound to mechanical
potential to kinetic
kinetic to potential
A ball is projected into the air. Where is potential energy the greatest?
Which point on the roller coaster's path represents the maximum potential energy?
As a roller coaster goes downhill
kinetic energy is converted into potential energy.
potential energy is converted into kinetic energy.
electrical energy is converted into potential energy.
potential energy is converted into electrical energy.
The Law of Conservation of Energy states:
Energy can created or destroyed but not transformed
Energy cannot be created or destroyed, it can only transferred or transformed
Energy can't be created, destroyed or transformed
Energy can be created and destroyed, not transformed or transferred