The Universe - Review

What is the Big Bang theory about?

• It is a very big clock in London.

• It is about an enormous explosion.

• It is the name of a galaxy.

• It is the name of a constellation.

After the Big Bang explosion...

• Only planets were created.

• Only galaxies were created.

• The whole universe was created.

• Only constellations were created.

What are stars?

• They are planets that are on fire.

• They are comets that are not moving.

• They are planets orbiting around the Sun.

• They are giant spheres of very hot gas that produce light and heat.

What is the name of the groups of stars that form patterns in the sky?

Depending on the time of the night, the season and the hemisphere we are in...

• We can always see the same constellations in the sky.

• We cannot see constellations in the sky.

• We can see only one constellation in the sky.

• We can see different constellations in the sky.

A __________ is a group of stars, planets, dust and rock.

The galaxy where we live in is called the

How many stars are there in the Solar System?

• Only one: Polaris star.

• Only one: the Sun.

• There are a lot of stars and constellations.

• There are a lot of stars but only one constellation.

Choose the right option about inner planets:

• They are Mercury, Venus, Earth and Mars are outer planets and they are mostly made of gas.

• They are Jupiter, Saturn, Uranus and Neptune are outer planets and are mostly made of rock.

• They are Mercury, Venus, Earth and Mars are inner planets and they are mostly made of rock.

• They are Jupiter, Saturn, Uranus and Neptune are inner planets and are mostly made of gas.

What are comets?

• They are made up of ice, gas and dust. They orbit the Sun in an elliptical way.

• They are irregular-shaped objects made of rock.

• They are moons that orbit around planets.

• They are small planets that orbit the Sun.