Motion
What makes things move?
Forces
What is a wave?
It transfers energy from one place to another
What is matter?
Anything that takes up space
What is potential energy?
Energy that is stored
What is the law of gravity?
A force that pulls objects together
How can we predict future motion?
Patterns and laws of motion
What are 2 different types of waves?
Transverse and Longitudinal waves
What are the 3 states of matter?
Solids, liquids, and gases
Can energy be created or destroyed?
No
What is Newton's 2nd law?
Force= mass x acceleration
What is velocity?
speed AND direction
How does the energy of a longitudinal wave move?
Longitudinal waves move back and forth
How do the states of matter change?
By temperature
What is kinetic energy?
Energy in motion
Newton's 1st Law of Motion
Objects at rest stay at rest, objects in motion stay in motion
What is Friction?
A force that slows things down
What is a waves amplitude?
The height of a wave
What is a physical change?
No new states of matter
How can a compass tell you where to go?
It uses the Earth's magnetic field and finds north to point you in the right direction
What is Newton's 3rd Law of Motion?
For every action, there's an equal and opposite reaction
How does mass change acceleration?
Causes an object to increase in speed
What is the trough and the crest of a wave?
A trough is the lowest point and the crest is the highest point
What is a chemical change?
When something (substance) new is created
What are magnetic fields?
Created by moving electric charges
What is a simple machine?
Tools that make work easier