OCEANS
TIDES
SOLAR SYSTEM
STARS & GALAXIES
THE UNIVERSE
100

The largest ocean on Earth.

What is the Pacific Ocean?

100

The force primarily responsible for tides.

What is gravity?

100

The process that powers the Sun.

What is nuclear fusion?

100

The birthplace of stars.

What is a nebula?

100

A planet outside our solar system.

What is an exoplanet?

200

Salt in the oceans originally comes from weathered _____.

What are rocks?

200

The object with the greatest effect on Earth's tides.

What is the Moon?

200

The four rocky planets are known as these planets.

What are the inner planets?

200

Star color is most closely related to this property

What is temperature?

200

A region where gravity is so strong that light cannot escape.

What is a black hole?

300

Oceans help regulate Earth's _____ by storing and moving heat.

What is climate?

300

When the Sun, Earth, and Moon are aligned, these tides occur.

What are spring tides?

300

These planets are mostly made of gas and ice.

What are the outer planets?

300

Blue stars are generally this compared to red stars.

What is hotter?

300

This observation shows that the universe is expanding.

What is redshift?

400

Ocean currents move this around the planet.

What is heat?

400

When the Sun and Moon pull at right angles, these tides occur.

What are neap tides?

400

The force that keeps planets in orbit.

What is gravity?

400

A large collection of stars held together by gravity.

What is a galaxy?

400

The theory that explains the origin and expansion of the universe.

What is the Big Bang Theory?

500

Deep ocean water is generally cold, dark, and has this condition.

What is high pressure?

500

Besides the Moon, this object also affects Earth's tides.

What is the Sun?

500

Earth's seasons are caused by this.

What is Earth's tilt?

500

A unit used to measure very large distances in space.

What is a light-year?

500

Name one major piece of evidence supporting the Big Bang Theory.

What is redshift, cosmic microwave background radiation, or the abundance of hydrogen and helium?

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