Vocabulary
True or False. A bike on grass is a form of friction.
True
This type of energy is caused by the movement of an object's molecules. The faster the movement, the more heat!
Thermal energy
An object will stay in motion, unless an unbalanced force causes it to _____________.
change speed, change direction or both.
Newton's _______ Law states that the greater the mass of an object, the more force is needed to accelerate the object.
Second
True or False: All variables stay the same in an investigation, no matter what.
False
___________ is the stored energy an object has because of its height in a gravitational field.
Gravitational Potential Energy or GPE
______ energy is caused by vibrations and travels in waves.
Sound
Newton's 2nd law explains how force and _________ determine an object's acceleration.
Mass
A rocket taking off is an example of which of Newton's laws?
Newton's 3rd Law
This type of variable is what you are measuring in your investigation.
The dependent variable
Potential energy is____________ energy.
stored
Without this type of energy, we would not be able to see.
Light Energy
True or False: Acceleration is a push or pull.
False-- Acceleration is the rate at which an object changes speed and direction.
Which of Newton's laws states: That an object at rest will stay at rest and an object in motion will stay in motion at a constant velocity, unless acted upon by an unbalanced force.
Newton's 1st Law
_________variables stay the same in each trial of your investigation.
Controlled
Unbalanced OR Balanced Forces.... is when two forces acting on an object are not equal in strength, causing the object's motion to change.
unbalanced forces
True or False: Electrical Energy is the sum of potential and kinetic energy of an object.
False, that is mechanical energy.
What is inertia? A. When you have a stomach cramp B. When an object resists a change in it's state in motion C. When an object accelerates D.A force that pulls two objects together
B
Which of Newton's Laws states: That for every action there is an equal and opposite reaction.
Newton's 3rd Law
The ____________ variable is the variable that you change in an investigation.
Independent
Kinetic energy is___________________.
The energy an object has due to its motion.
Kinetic or Potential: A rollercoaster car halfway down the slope.
Two cars crashing into each other, causing a transfer of energy is called___________.
Collision
True of False: Force equals mass times acceleration.
True
Name the three types of variables in a science investigation.
controlled, dependent, and independent