Noncontact Forces
What force pulls objects toward each other?
Gravity
What are the two main types of waves?
Mechanical and electromagnetic
What determines volume?
Amplitude
What planet is closest to the Sun?
Mercury
What does waxing mean?
Getting brighter
What happens when two like charges interact?
They repel
What part of a wave measures height?
Amplitude
Which light wave has the longest wavelength?
radio waves
What causes seasons on Earth?
Earth’s tilt and revolution
What does waning mean?
getting darker
What happens when opposite magnetic poles meet?
They attract
Number of waves passing in a certain time measures a waves
frequency
What determines pitch?
Frequency
How long is one rotation of the earth?
24 hrs or 1 day
How long does it take the Moon to revolve around Earth?
29.5 days or 1 month
What two things affect gravity strength?
Mass and distance
A sound wave has to have atoms to travel therefor it is what types of wave?
Mechanical wave
if an object is red, what does that mean is happening to the red waves?
they are being reflected
What process formed Earth and the planets?
Accretion
which contact force is the driver for the Electrostatic force?
What is a medium?
Whatever form of matter the wave is traveling through
which type of light is felt in the form of HEAT
Infared Light
Which type of planets DO NOT have solid surfaces?
Gas giants
what is the name of the moon phase that happens when the moon is directly between the sun and the earth?
New moon