Solar system
Planets
Small bodies
(comets, asteroids, meteors)
Vocabulary
Random
100
This is the star at the center of our solar system
The sun
100

True or False?

Each gas planet is small, dense and rocky.

False
100

True or False?

An asteroid is a small body of rock, which orbits the sun.

True
100
a small body composed of Ice and dust that orbits the sun in long, narrow pathways
Comet
100
What is the diameter of Mars compared to Earth?
Mars is 1/2 the size of Earth's diameter.
200
This is the 6th planet from the sun.
Saturn
200
This planet is the largest in our solar system and has a fast rotation of only 10 hours.
Jupiter
200
This is a space object that reaches Earth's surface.
a Meteorite
200
This is the Sun-centered model of the solar system.
Heliocentrism
200

This is Not found in our solar system.

A-Eight planets

B-North star

C- Sun

D-Asteroids and comets

Polaris (the north star)
300
This is the correct order of the INNER planets according to SIZE.
Mercury, Mars, Venus, Earth
300

Which 2 planets in our solar system have only methane in their atmosphere?

Neptune and Uranus
300
This solar body is often called a "shooting star"
a Meteor
300

A rocky body found in outer space that has not  landed on Earth's surface yet.

Meteoroid
300
This has the most mass and therefore the most gravity in our solar system.
the Sun
400
This is where the sun's energy comes from
Nuclear Fusion
400
Compare the surface of Mars and Earth.

Earth: water in 3 forms, Mountains, valleys, plains and volcanoes.

Mars: Volcanoes, red surface because of oxygen and Iron reacting (rust)

400
Billions of these orbit the sun in between the orbits of Mars and Jupiter
Asteroids
400
This is the Furthest planet from the sun.
Neptune
400
We send these out to learn more about our solar system and beyond
Space probes
500
An Earth centered model of the solar system is called this.
A Geocentric model.
500
Tell the atmosphere of all the outer planets.

Jupiter: many gases-hydrogen,helium,methane and many more.

Saturn: hydrogen, helium, sulfur, nitrogen,oxygen, ammonia, methane.

Neptune and Uranus: Methane only.


500

Tell the difference between asteroids, comets, and meteors.

Asteroid: small, solid, rock, visible at night.

Comet: Ice and dust, has long tails called comas.

Meteor: Streak of light seen from the burning of a meteoroid, called "shooting stars"

500

This is why the atmospheres of the outer planets does not just escape into space. It also pulls the planets into orbit around the sun.

Gravity
500
This is the scientist who helped Kepler prove that planets orbited in ellipses (ovals), not circles.
Tycho Brahe
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