1.
distance from the sun to earth
2.
distance light travels in a year
3.
measurement of the brightness of a star
4.
small rocky particle that moves through space
5.
layer of the sun that contains sun spots
6.
outermost layer of a star
7.
known as the red planet
8.
causes mountains and volcanoes
9.
causes seafloor spreading
11.
push or pull of an object
12.
process of changing position
13.
force that resists the motion of two surfaces that are touching
14.
tendency of an object to resist a change in motion
15.
amount of matter in an object
16.
combination of all forces acting on an object
17.
amount of space between two things
18.
measure of the distance an object travels in a unit of time
19.
speed and direction of a moving object
20.
force of gravity acting on an object
22.
movement back and forth in a wave
24.
height of the wave, amount of energy strength
27.
distance between repeating points
28.
longest wavelength, lowest frequency
29.
used for satellites and microwaves
31.
only EM wave that humans can see
32.
used of medical imaging
33.
rays shortest wavelength, highest energy
34.
ability to do work or cause change
35.
device that takes in signals
36.
device that sends out signals
