The Universe quiz

Most scientists agree with a theory about the way the Universe began. What is this theory called?

• The great expansion theory

• The big bang theory

• The end of the dinosaurs

How long ago do scientists think the Universe began?

• 9 million years ago

• 18 billion years ago

• 13.8 billion years ago

There are hundreds of billions of stars in our galaxy alone. What are stars?

• Celestial bodies made mostly of hydrogen and helium that give out light and heat.

• Other planets

• Rocky satellites made of graphite and diamond.

What are comets made of?

• Rock and metal

• Rock and gas

• Rock, dust and ice

What is the Moon?

• A natural satellite

• A planet

• A star

What is the name given to the largest types of stars in space?

• Red dwarfs

• Red sugergiants

• Red giants

What is the Sun?

• A planet

• A moon

• A star

• An asteroid

Which planet is known as the "Red Planet"?

• Venus

• Mars

• Jupiter

• Mercury

What is light pollution?

• When lights help plants grow faster.

• When too many lights make it hard to see the stars at night.

• When there is no electricity in a city.

What are the main types of light pollution?

• Reflection, shadow, and sparkle.

• Rain, fog, snow, and clouds.

• Skyglow, glare, light trespass, and clutter.