Magnetics
Iron, Nickel or Cobalt
What year was gravity discovered?
1687
Number of cycles per second
Which electromagnetic radiation has the longest wavelength?
Radio waves
How old is the universe?
13.8 billion years old
What is the area where a magnet's force can be felt?
Magnetic field
Who discovered gravity?
Sir Isaac Newton
What is the wavelength of a wave?
The distance between crests
What type of ray has the highest frequency?
Gamma Rays
How did the universe begin?
Big Bang
Each magnet has two poles. What are they?
North and South
The more mass an object has, the _________ the gravity will be.
Stronger
The higher the frequency of a wave, the more ________ is has.
Energy
Which type of electromagnetic radiation can cause sunburns?
UV rays
How many planets are in our solar system?
8
Opposite sides of a magnet ______ each other
Attract
What is mass?
The amount of matter in a substance
Matter that sound moves through is called a .........
Medium
A photon is lights _______ of energy
particle
What is it called when a massive star dies and blows up?
supernova
Repel
What is gravity?
the force that attracts a body with mass to another physical body.
What are the two types of waves?
Longitudinal and transverse
Refraction is the change in the direction of a wave when it passes through a different ______
Medium
What are the two types of planets in our solar system?
Terrestrial and Jovian