Vocabulary
This is a measure of an object's change in position over time
What is "SPEED"?
There is less friction on a _______ surface.
What is "smooth"?
The energy of motion - a roller coaster going down a hill
What is "KINETIC ENERGY"?
To put an object in motion, you have to _______.
What is "apply a force"?
In an experiment, the educated guess the scientist makes, often in the form of an "If...then" statement.
What is a "HYPOTHESIS"?
The ability to do work or cause change
What is "ENERGY"?
When a ball is thrown up in the air, this is what causes the ball to fall to the ground
What is "GRAVITY"?
Energy associated with light - flashlights and x-rays are examples
What is "RADIANT ENERGY"?
You need these two things to describe your speed
What are "time" and "distance"?
In an experiment, the condition that the scientist changes or manipulates.
What is the "INDEPENDENT VARIABLE"?
Any push or pull
What is "FORCE"?
The heavier/larger an object is, the _______ the force needs to be.
What is "greater"?
Energy in the form of heat - a toaster
What is "THERMAL ENERGY"?
Describes natural resources that cannot be replenished within a lifetime - natural gas, oil, and coal
What is "NONRENEWABLE"?
Conditions that remain the same throughout an experiment.
What are "CONSTANTS"?
A force that works against or resists motion.
What is "FRICTION"?
Describes energy that is not yet in motion - a soccer ball that has not been kicked
What is "STORED ENERGY" or "POTENTIAL ENERGY"?
Energy in the form of a charge flowing through a conductor - a cell phone charger
What is "ELECTRICAL ENERGY/ELECTRICITY"?
Which object has more mass--a pool inner tube or a watermelon
What is a watermelon
In an experiment, the change in this is measured and recorded as data.
What is the "DEPENDENT VARIABLE"?
An object's motion is described in terms of ____ and ____
What are "DIRECTION" and "SPEED"?
Mrs. Sparks' car broke down. She tried pushing the car, but it wouldn't move. Her husband got out of the car and helped her. Together they were able to push the car to the side. Why wasn't Mrs. Sparks able to move the car by herself?
What is "the car is heavy" or "the car has a lot of mass"? (This means you need more force to move it. Together, Mrs. Sparks and her husband had more force and were able to move the car.)
Energy associated with moving parts - a ceiling fan
What is "MECHANICAL ENERGY"?
Term used to describe energy sources such as solar power, wind power, hydroelectric power, and biomass fuels
What is "RENEWABLE"?
At the end of an experiment, the scientist analyzes the results and formulates this...
What is a "CONCLUSION"?