Solar System
Star Properties
Objects in the Solar System and Solar System Models
Earth, Moon, Sun
Mass v Weight
100
_____________, Galaxy, Solar System, Star, Planet
What is Universe
100

Color of the coldest stars.

What are red stars?

100

An object that orbits the earth

What is the moon?

100

The imaginary line that a planet spins on.

What is an axis?

100

What do we call the amount of matter in an object?

Mass

200
These are smaller than a solar system.
What are planets and stars?
200

Color of the hottest stars.

What are blue stars?

200

Why did scientists move from the geocentric model toward the heliocentric model?

What is new evidence and observations better supported the heliocentric model?

200

This happens to the gravitational pull when 2 objects are further apart.

What is weaker gravitational pull?

200

What force pulls objects toward Earth and gives them weight?

Gravity

300
Unit of measurement to measure the difference between galaxies

What are light years?

300
These types of stars are the largest.
What are the giants and Super Giants?
300
This is the theory that the sun is in the middle of the solar system.
What is heliocentric theory?
300

The movement of a planet traveling around the Sun.

What is revolution?

300

An astronaut takes a backpack from Earth to the Moon. What happens to the backpack’s weight?

Its weight decreases because the Moon has weaker gravity than Earth. Its mass stays the same.

400

Unit of measurement used to measure distances between planets in the same solar system

What is astronomical units?

400

A solar prominence that creates auroras on Earth.

What is solar flare?

400
This is the theory that the earth is the center of the solar system.
What is geocentric theory?
400

Which two factors help explain why Earth is rocky while Neptune contains large amounts of gas and ice

Earth is closer to the sun and has a higher temperature 

400

An object has a mass of 5 kg on Earth. What is its mass on the Moon?

5 kg

500
The collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
What is a solar system?
500
This is the difference between absolute brightness and apparent brightness.
What is absolute brightness is how bright a star actually is and apparent brightness is how bright a star appears from Earth?
500

Unlike early models that used circular paths, the modern solar system model describes planetary orbits as these.

What are elliptical orbits

500

Mercury is about 0.39 AU from the Sun, while Earth is 1 AU away. Mercury revolves around the Sun in 88 days, while Earth takes 365 days. Why?

What is Mercury is closer to the Sun, so it has a shorter revolution period?

500

Explain how an object's mass can stay the same while its weight changes.

Mass is the amount of matter, while weight depends on gravity. The same object weighs less on the Moon because the Moon's gravity is weaker.

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