The very top of a wave.
What is crest
The closest star to Earth.
A process that helped shaped planets and the moon, caused by impacts of small objets hitting the surface so fast it causes explosions.
What is impact cratering?
a LARGE rock that orbits mostly between Mars and Jupiter.
What is an asteroid?
What is the Milky Way?
What is the very bottom of a wave?
What is a trough?
The time it takes for Earth to revolve around the Sun.
What is a year?
The process where molten rock moves from the planet's hot interior to the surface helping shape the planet's surface.
What is volcanism?
a small pebble-like rock that floats in space?
What is Metroid?
Stars form in this cloud of gas and dust
The measurement between two crests.
What is wavelength?
The gas giant planets.
What is Jupiter, Saturn, Uranus, and Neptune?
a mixture of dust and rock covered in an icy cap?
The layer of the Sun that creates energy in the process called fusion.
What is the Core?
The measurement of the middle of a wave to the top or bottom of a wave.
What is amplitude?
The different shapes the moon goes through in a month
What are the phases of the Moon?
The main gas that gives some of the outer planets' their blueish hue?
What is methane gas?
A small rock that passes through the Earth's atmosphere.
What is a meteor?
Spots on the Sun's photosphere that are cooler than surrounding areas making it appear dark.
The number of waves that pass a certain point in a second?
What is frequency?
What causes the seasons?
What is the tilt of the Earth's axis?
The planet that its axis is on its side, which causes it rotate on its side like a barrel rather than spin like a top.
What is Uranus?
A meteor that reaches the Earth's surface.
The three types of galaxies: categorized by their shape.
What is spiral, elliptical, and irregular?