Earth Facts
The Universe
Star Systems
Galaxies
100

What is the Diameter of the Earth? (Equator)

What is 12,756 KM

100

When did the Universe begin, and what do scientists refer to it as?

What is the Big Bang Theory: 13.7 Billion years ago

100

Name 2 types of stars clusters.

What are Globular and Open star clusters?

100

Which galaxy contains mostly dust, gas, and young stars?

What are irregular galaxies?

200

What are our planet's four main systems? Hint: Think Avatar 

What is Water, Air, Fire, and Earth 

200

Name the 2 atoms that were formed in the early universe that is still almost the same today. 

What is Hydrogen (75%) and Helium (25%)?

200

True or False: Some stars can be bigger than other planets throughout our galaxy.

What is True?

200

Which galaxy is know to be 100,000 light years across?

What is the Milky Way?

300

What is Geology?

What is the study of the Earth?

300

What was formed 200-400 million years after the Big Bang?

What are stars and galaxies?

300

Name the 5 characteristics needed to classify a star.

What is Color, temperature, size, brightness, composition?

300

Name the 2 types of spiral galaxies.

What are normal and barred galaxies?

400

Which 'sphere' includes lakes, rivers, glaciers, ground water, and rain? 

What is the Hydrosphere?

400

In 1927, Hubble, discovered what kind of shift of distant galaxies?

What is the Red Shift?

400

Which star is closest to Earth?

What is the Sun?

400

What type of galaxy is considered football or egg shaped, and has almost not dust or gas between stars?

What is the Elliptical galaxy?

500

How far is the Earth away from the Sun?

What is 149,600,000 KM?

500

Which 2 scientists discovered the Cosmic Microwave Background (CMB) Radiation in 1964?

Who are Penzias and Wilson?

500

Which star cluster may contain more than a million stars?

What is a globular cluster?

500

How far is 1 light-year in miles?

What is 5.88 Trillion miles?

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