Solar System
the planet known for its prominent ring system
Saturn
the tiny particles that all matter is composed of
Atoms
The first man to travel into space
Yuri Gagarin
the length of one complete wave or cycle of oscillation
The hot center of the sun
Core
Often called the morning star
Venus
A positive particle found in the nucleus
Proton
The first man to set foot on the surface of the moon
Niel Armstrong
A single rise or depression in a wave
Pulse
Lacking an electrical charge
Mercury
formed by electrons that are in orbit at about the same distance from the nucleus
The first American to orbit the earth
John Glenn
Refraction
The metric unit used to measure an object's mass
Gram or Kilogram
Has the largest moon in the solar system
Jupiter
the measure of the pull of gravity on an object
The man known as the "Father of Modern Rocketry"
Robert H. Goddard
The movement of energy from one place to another
Wave
Rock that has been changed by heat and pressure
Metamorphic
Discovered by William and Caroline Herschel
Uranus
The amount of matter that makes up an object
The man who disvcovered that white light is a combination of many colors
Sir Isaac Newton
A back and forth motion that repeatedly follows the same pattern
Oscillation
The chemical reaction that occurs when a substance reacts rapidly with oxygen
Combustion