Forces
Energy
Potential Energy
Kinetic Energy
KE Graphs
100
True or False. Fields exist between objects, causing objects to move without touching.
True
100
True or False. Energy can be created or destroyed.
False
100
Which Acorn on the Oak Tree has the most Potential Energy?
https://docs.google.com/document/d/1W99OIeZrL4QOyVllWHhJhlPucp0PaKEArQagqyvZjjs/edit?usp=sharing
A
100
True or False. When mass increases, kinetic energy increases.
True
100
Is the relationship between mass and kinetic energy a direct relationship, exponential relationship, or inverse relationship?
Direct relationship
200
What are two factors that increase the strength of electric force?
A)Decreasing the charge
B)Increasing the charge
C)Decreasing the distance
D)Increasing the distance
B)Increasing the charge
C)Decreasing the distance
200
Which type of energy is known as stored energy?
Potential energy
200
List the pictures in order from least potential energy to most potential energy.
bow and arrow picture https://docs.google.com/document/d/1W99OIeZrL4QOyVllWHhJhlPucp0PaKEArQagqyvZjjs/edit?usp=sharing
1,2,3
200
Which location has the greatest percentage of kinetic energy? Note: Location 1 is highest off of the ground and location 5 is closest to the ground.
Roller Coaster 1 https://docs.google.com/document/d/1W99OIeZrL4QOyVllWHhJhlPucp0PaKEArQagqyvZjjs/edit?usp=sharing
5
200
Is the relationship between speed and kinetic energy a direct relationship, exponential relationship, or inverse relationship?
Exponential Relationship
300
What are two factors that increase magnetic force between two magnets?
A) Use large magnets
B) Use small magnets
C)Decrease the distance between the magnets
D) Increase the distance between the magnets
A) Use large magnets
C)Decrease the distance between the magnets
300
Which type of energy is known as energy of motion?
Kinetic Energy
300
Calculate the gravitational potential energy using PE=mgh
A 10 kg object is lifted to a height of 5 meters above the ground. Assuming the acceleration due to gravity is
g=9.8m/s2.
490J
300
Use the formula to calculate the kinetic energy given the mass and velocity.
KE=0.5mv^2
mass = 5 kg
velocity = 10 m/s
250J
300
Draw an example of a graph describing the relationship between mass and kinetic energy.
(Must be the correct line shape)
400
What are two factors that increase the strength of gravitational force?
A)Decreasing the distance
B) Increasing the distance
C) Decreasing the mass
D) Increasing the mass
A) Decreasing the distance
D) Increasing the mass
400
Select all that are true about energy.
A)Can be converted.
B)Can be destroyed.
C)Cannot be created.
D)Is the ability to do work
A)Can be converted.
C)Cannot be created.
D)Is the ability to do work
400
Using the formula PE=mgh, calculate the gravitational potential energy.
A 2 kg object is raised to a height of 8 meters above the ground. Assuming g=9.8m/s2, what is the gravitational potential energy of the object at that height? No rounding needed
156.8J
400
Use the formula KE=0.5mv^2
A 6kg house cat is chasing a mouse at 5m/s. How much kinetic energy does the cat have?
75J
400
Draw an example of a graph describing the relationship between speed and kinetic energy.
(Must be the correct line shape)
500
You are asked to design an experiment to test how the distance between two magnets affects the strength of the magnetic field. After conducting the experiment, you need to evaluate the experimental design. Which of the following actions would most effectively improve the accuracy of the evidence showing that magnetic fields exert forces on objects without them being in contact?
A) Use a different magnet in each trial
B) Ensure the magnets are always touching each other.
C) Use more precise measurement tools to measure the distance and keep the environmental conditions consistent.
D) Test the experiment at only one distance.
C) Use more precise measurement tools to measure the distance and keep the environmental conditions consistent.
500
Describe the process of energy transformation when you pull back and release a rubber band.
Follow the energy back as far as you can and end with explaining how kinetic energy results in the motion of the rubber band. Make sure to use the terms potential energy and kinetic energy in your response.
The sun supplies energy to plants
Humans consume plants for energy
Humans use the energy when we pull back the rubber band
Energy is stored as elastic potential energy when the band is pulled back
Energy is transformed in to kinetic energy when the rubber band is released
500
List the locations in order from least potential energy to most potential energy.
Note: Location 1 is highest off of the ground and location 5 is closest to the ground.
Roller Coaster 1 https://docs.google.com/document/d/1W99OIeZrL4QOyVllWHhJhlPucp0PaKEArQagqyvZjjs/edit?usp=sharing
5, 2, 3, 6, 4, 1
500
Using Roller Coaster 2, describe how energy is transformed between kinetic and potential energy. In your description, compare the locations with greatest and least percentages of potential energy and locations of greatest and least percentages of kinetic energy.
Roller Coaster 2 https://docs.google.com/document/d/1W99OIeZrL4QOyVllWHhJhlPucp0PaKEArQagqyvZjjs/edit?usp=sharing
At the top "W" the roller coaster has the greatest percentage of potential energy and least percentage of kinetic energy.
As the roller coaster travels down to "X", the energy is transformed to kinetic energy. Location "X" is closest to the ground and has the greatest percentage of kinetic energy and least percentage of potential energy.
The roller coaster then goes up the ramp "Y", where some kinetic energy is converted to potential energy.
Finally, the roller coaster will travel down the small hill transforming the potential energy back to kinetic energy.
Bonus: Energy is not created or destroyed in the process, but the roller coaster will slow down as some energy is transformed in to sound and heat.
500
Which factor (mass or velocity) has a greater impact on kinetic energy and why?
Velocity has a greater impact on kinetic energy because it is squared. Doubling the velocity quadruples the kinetic energy, while doubling the mass only doubles the kinetic energy.