Exploring the Universe and Celestial Bodies

Front

Stars are celestial bodies that give off ______ and _______.

Back

Stars are celestial bodies that give off light and heat.

Front

Nebulae are clouds of _________ gas and cosmic dust.

Back

Nebulae are clouds of interstellar gas and cosmic dust.

Front

True or False. Stars are seen as tiny points of light in the sky, very far from Earth.

Back

True

Front

A galaxy is a group of _______, _______ and cosmic dust.

Back

A galaxy is a group of stars, gas, and cosmic dust.

Front

________ are formed when stars are born or stars die.

Back

Nebulae are formed when stars are born or stars die.

Front

_______ can appear elliptical, spiral-shaped, or disorganized.

Back

Galaxies can appear elliptical, spiral-shaped, or disorganized.

Front

What is the main source of energy for the Solar System.

Back

The sun's surface temperature reaches 6,000 degrees Celsius.

Front

Rocky and emit no light of their own. Orbit around planets. Some planets have lots and some have one.

Back

Satellites

Front

Celestial bodies without light of their own. Reflect sunlight along a long line of gases. Normally very far from Earth.

Back

Comets

Front

The first planet in the Solar System.

Back

Mercury