Types of Energy
The "stored" energy within every object
Potential Energy
A push or a pull
Force
Measuring an item's position over time describes its...
Motion
Rubbing your hands together generates heat. What is the energy transformation happening?
Mechanical --> Thermal
Something that stays the same in an experiment
Constant
The energy of motion. This energy is responsible for an object's motion.
Kinetic Energy
The force that pushes down on an object at all times (on Earth)
Gravity
Measure of the distance an object is moving over a given unit of time
Speed
Plugging in a fan to cool down the room. What energy transformation happens?
Electrical --> Mechanical
The only variable purposely changed by a scientist
Independent Variable
The energy released by the sun in the form of light
Radiant Energy
The combination of all of the forces (such as gravity, friction, etc.) acting on an object is called...
Net force
Speed increases if...
More force is applied
What types of energy come from the sun?
Thermal and Radiant
What a scientist measures to determine the effect of the independent variable
Dependent Variable
The energy produced by movement, including sound waves
Mechanical energy
What three forces are acting upon a wagon as it rolls down a hill?
Kinetic energy, gravity, friction
A bowling ball is rolled down a ramp. Which material will slow the motion of the ball down the most? Why? Aluminum foil, sandpaper, wax paper, bare wood
Sandpaper produces more friction that works against the force of the ball
What energy transformation happens when a student throws a ball up into the air?
Potential Energy --> Kinetic Energy
What is the IV in the experiment below?
Susan played different types of music (rock, pop, and classical) for a set of seedlings. She measured plant growth over a timeframe of two weeks.
Type of music
Energy created by the flow of electrons through a material
Electrical energy
Describe what happens to a soccer ball that is rolling on the grass. Why does it eventually come to a stop?
The force of friction acts against the force of motion (kinetic energy), eventually bringing the ball to a stop.
What influences how much force is required to move an object?
The mass of the object
A gas-powered car engine creates which energy transformations once the car is in motion?
Thermal and Mechanical
What is the DV in the experiment below?
Nolan planted different colored rose bushes in the school courtyard. He set up cameras and recorded how many times hummingbirds came to each rose bush over the course of three days.
Number of times a hummingbird came to a rose bush