Variables
Joe plans on testing how weight affects the speed a toy car rolls down a ramp. He decides to make a table to record his data. He has the following columns.
Trial, Height, Weight, and Time
Which of these is the Independent variable?
Weight
This is also known as heat energy
Thermal energy
As a train goes up a hill, describe the energy transformation occurring
Kinetic energy transforms into potential energy
Complete the sentence:
Energy cannot be ...
created or destroyed
Give an example of something that has kinetic energy.
literally anything that moves
Nicole is doing an experiment to determine how different materials affect how fast a marble rolls down a ramp. What should she keep constant in this experiment?
She should use the same marble
This energy is the result of motion
kinetic energy
Daniel has no friends and has to play catch by himself. He decides the best way to throw the ball where he can catch is is to throw it straight up so it comes straight back down to him. When does the baseball only have potential energy?
At it's highest point
Give an example of energy transferring from one object to another.
Various answers
Chart A
Which material would be best to prevent cars from accelerating too quickly?
Material X
Eve is conducting an experiment to determine how the amount of force she uses affects the distance a ball will roll. What is the independent variable in her experiment?
The amount of force
Animals get this type of energy from eating food
chemical energy
As a pendulum swings back down from its highest point, what kind of energy transformation is occurring?
Potential energy transforms into kinetic energy
What are two factors that affect an objects kinetic energy?
speed and mass
Newtons 1st law of motion states that objects in motion stay in motion. Why is this not always true for objects on Earth?
The conditions on Earth are different than those described in the law.
Joe plans on testing how weight affects the speed a toy car rolls down a ramp. He decides to make a table to record his data. He has the following columns.
Trial, Height, Weight, and Time
Which of these is the Dependent variable?
Time
Objects get this type of stored energy from their height above the ground and their shape
potential energy
Yesenia winds up a mechanical toy rabbit and then places it on a table. What kind of energy transformation is occuring?
Potential energy transforms into kinetic energy
All moving objects have energy. What kind of energy do cars use?
chemical energy
Liam is hitting various balls made of different materials with varying amounts of force to see how far they go. He records his data in chart B.
Which material travels the least even with great amounts of force?
Material A
Victoria is watching an NBA basketball game and wants to conduct an investigation to determine what point on the court is best to shoot from. She marks each spot the players shoot from and marks whether or not they made it.
What is the independent variable and the dependent variable in this investigation?
The independent variable is where the players shot from, and the dependent variable is whether or not they made it.
What are the factors that determine an objects potential energy? (2 of them)
An objects height and mass
Jose rides his bike downhill without needing to use the pedals. Describe the change in energy that is occuring.
Potential energy is transformed into kinetic energy
How does the law of conservation of energy apply to the changes in potential energy as a pencil falls to the floor?
Potential energy is converted to kinetic energy.
Selena pushes a cardboard shoebox down a ramp. She measures and records the distance that it slides. How can Selena increase the kinetic energy of the shoebox in her next trial?
She could raise the ramp or she could use more force to push it down.