The solar system

What’s the name of our planetary system?

• The Solar System

• The Sun

• The Earth

• The Milky Way

Which force holds all the planets orbiting around the Sun?

• Gravity

• Magnetism

• Density

• The wind

The Sun was originated…

• 5 billion years ago

• 5 million years ago

• 5 thousand years ago

• 5 hundred years ago

The Sun originated in the center of a…

• Nebula

• Moon

• Planet

• Star

The Sun is...

• A medium-sized star

• Much more heavy than the Earth

• 1.3 million times bigger than the Earth

• All the sentences are correct

What sentence about the Sun is FALSE or incorrect?

• The Sun is a solid sphere

• The Sun is made up of hydrogen and helium

• The Sun radiates energy to the rest of the planets

• Nuclear explosions take place inside the Sun

How do we call an object that orbits a star that has its own gravity and a spherical shape?

• Planet

• Asteroid

• Meteoroid

• Star

Rock planets are...

• Composed of highly dense materials

• Further from the Sun

• Bigger in size than gaseous planets

• Orbiting the Sun at slow speed

Gaseous planets...

• Have thick atmospheres

• Are very close to the Sun

• Are mainly formed of dense materials

• Are much smaller than inner planets

What sentence about the Earth is FALSE or incorrect?

• Is the smaller of the rocky planets

• Only has one natural satellite

• Is 150 million km far from the Sun

• Is the only planet that accommodates water in its liquid state