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100

The Milky Way is a type of:

What is a galaxy?

100

This is where the largest diameter of Earth is located.

What is the equator?

100

Earth makes a full rotation around its axis every:

What is 24 hours?

100

This would result from a decrease in solar radiation.

What is a decrease in global temperatures?

100

Free space! You earn 100 points.

100

200

This is the cause of impact craters found throughout our solar system. 

What is MANY collisions?

200

This would cause an increase in the length of Earth's day.

What is a decrease in its rotational speed?

200

This is the cause of tides.

What is the gravitational interaction between the moon and Earth?

200

The moon appears to shrink during these phases.

What are waning phases?

200

When Earth is fully tilted towards the Sun, the Northern Hemisphere experiences this season.

What is summer?

300

This is the BEST evidence for gravity influencing the Solar System.

What is the elliptical orbits of planets around the sun?

300

The number of times daylight and darkness are equal.

What is two?

300

This is the characteristic that makes Earth unique from all other planets in the Solar System.

What is all three phases of water being present?

300

When Earth's axis is not tilted towards or away from the sun, it is called:

What is the equinox?

300

This would cause more dramatic seasonal variation on Earth.

What is an increased angle of tilt?

400

These TWO statements are evidence that the solar system is a flattened, spinning disc.

What is all planets moving in the same plane? What is a single-direction elliptical orbit?

400

Earth receives energy from the Sun through this process.

What is the fusion of solar mass?

400

This is when a lunar eclipse occurs on Earth.

What is when the Earth is between the moon and the sun?

400

The sun makes life possible on Earth by providing:

What is the energy required for photosynthesis?

400

This causes the timing of seasons to be opposite in the Northern and Southern Hemispheres.

What is Earth's tilt?

500

Kepler's Law States:

What is that planets have an elliptical orbit.

500

This would occur if the Earth's tilt changed to 24 degrees.

What is the Tropic of Cancer, the Tropic of Capricorn, and the Equator would all change locations.

500

This scientific principle is applied to Earth's barycenter.

What is gravity?

500

The sun's energy is produced by this process.

Hydrogen nuclei combining to form a helium nucleus.

500

These TWO factors are responsible for seasons on Earth.

What is the axial tilt? What is Earth's revolution around the sun?