Space

• What is the Doppler Effect?

  The change in the frequency of wave caused by relative motion between the source of the wave and the observer.
• What is a Meteorite?

  A meteor that makes it to the ground and can be retrieved (if location is known)
• What is an Asteroid?

  A piece of rock that orbits the SUN in between the orbits of Mars and Jupiter, but get knocked out of orbit and across the solar system.
• What is a Comet?

  A piece of rock and ice from outside our solar system - the ice melts/ evaporates near the sun causing the comet to have a tail.
• What is the Sun?

  A star formed from a cloud of dust and gas being pulled together by

  gravitational attraction. Fusion reactions occur in the sun.
• What is a Meteor?

  An asteroid that has entered a planets atmosphere and heats up/glow due to air resistance. Disintegrate before reaching the ground.
• What is a Planet?

  An object that orbits the Sun and are large enough to be sphereical and have enough gravity to have cleared surrounding areas of most smaller objects.