TERMS
THE SUN
THE MOON
PLANETS
NON-PLANETARY BODIES
100

The gaseous layer surrounding Earth or another heavenly body.

What is the atmosphere?

100

When sun, moon and earth lined up in just the right way to block sun on earth.

What is a solar eclipse?

100

The Moon’s gravitational force pulls on Earth in a way that causes our oceans to bulge

What are ocean tides?

100

A natural or artificial body orbiting a planet or star

What is a satellite? 

100

The distance that light can travel in a year

What is a light year?
200

The branch of science that deals with the physical universe beyond Earth’s atmosphere.

What is astronomy?

200

These particles collide with atoms in Earth’s atmosphere and cause Aurora Borealis.

What are solar flares?

200

Occurs when the umbra completely shadows the Moon

What is a total lunar eclipse?

200

The average distance between Earth and the sun

What is the astronomical unit?

200

The measure of a star's brightness

What is magnitude?

300

The amount of light or radiation reflected by a surface, typically that of a planet or moon

What is albedo?

300
This visible feature is evidence of the sun's rotation.

What is a sunspot?

300

When the Moon is between Earth and the sun and we see no reflected sunlight

What is a new moon?

300

This category of planets are small and dense and rotate slowly

What are terrestrial planets?

300

Comets form this cloud when it comet gets close to the sun

What is a coma?

400

An organized system of millions/billions of stars, gas, solar systems, and dust held together by gravitational attraction.


What is a galaxy?

400

Plasma particles in this region of the sun rise to the surface of the photosphere.

What is the convective zone?

400

The Earth’s shadow during a lunar eclipse 

What is the umbra?

400

This category of planets are large, though not dense, and have rings.

What are the Jovian planets or "gas giants"?

400

The space between Mars and Jupiter where many many minor planets and celestial bodies can be found

What is an asteroid belt?

500

When some of the light coming in to a telescope is not focused on the same point, creating a fuzzy image

What is spherical aberration?
500

The 2 layers above the photosphere.

What are the chromosphere and the corona?

500

The line dividing the lighted side of the moon from the dark side.

What is the terminator?

500

Planets that orbit other stars

What are extrasolar planets or exoplanets?

500

Friction causes a meteoroid to glow as it moves into the Earth’s atmosphere

What is a meteor?