The solar system
Earth's Special Features
Outer Space Oddities
Moving Through Space
Asteroids, Comets, and Meteors
100

What is the largest planet in the solar system?

Jupiter

100

What gas allows us to breath Earth's atmosphere?

Oxygen

100

What is the name of the dwarf planet that was once classified as the ninth planet?

Pluto

100

What force keeps the planets in orbit around the Sun?

gravity

100

What is the main difference between an asteroid and a meteor?

What is that an asteroid is in space, while a meteor enters Earth’s atmosphere?

200

What is the name of the closest planet to the Sun

Mercury

200

What liquid covers approximately 71% of Earth’s surface?


water

200

What is the main difference between the Kuiper Belt and the Oort Cloud?

the Kuiper Belt is closer to the Sun and lies beyond Neptune, while the Oort Cloud is much farther and surrounds the solar system?

200

How long does it take the Earth to complete one revolution around the Sun?

365.25 days or one year

200

What is the name of the region where most asteroids are found?

asteroid belt

300

What planet is known as the "Red Planet"?

Mars

300

Why is Earth the only planet known to support life?

the proximity to the Sun, presence of water, and composition of the atmosphere

300

What type of object is Haumea, and where is it located?

What is a dwarf planet in the Kuiper Belt?

300

Why is the time that it takes a planet to complete one revolution around the sun different for the various planets

The planets are all different distances away from the sun.
300

What is the bright streak behind a comet called?

A Tail or Coma

400

Which planet has the most moons

Jupiter

400

What is the term for the distance between the Earth and the Sun?

An astronomical unit or AU

400

Why are comets sometimes called "dirty snowballs"

What is because they are made of ice, rock, and dust

400

What causes the Sun to rise and set each day on Earth?

Earths rotation / Spinning on its axis 

400

What are shooting stars actually?

Meteors burning up in Earth’s atmosphere?

500

What is the term for the path a planet takes around the Sun

orbit

500

What role does Earth's magnetic field play in supporting life?

Protecting Earth from harmful solar radiation?

500

How is the Sun different from other objects in the solar system?

it is a star, while other objects are planets, moons, or smaller celestial bodies?

500

Why do meteors appear to “burn up” when entering Earth’s atmosphere?

Friction with the atmosphere causing them to heat up

500

What are the two main regions of icy objects in the solar system?

The Kuiper Belt and Oort Cloud?