The Earth, the Sun and the Moon are all spheres because of ...

Every object with mass has gravity. The ... mass an object has the stronger the gravity.

From the data about planet's gravity, the planet that has biggest mass is ...

The Moon is smaller than the Earth, so the Moon’s gravity is ...

The Sun is a sphere because the Sun’s gravity pulls all the ... it is made of towards the centre.

Take a look the modeling of the Earth and The Moon. The Earth is represented by ...

Study the picture. The Moon is shown by picture ...

Marcus is making a scale model of the planets in our Solar System.

He is using the scale 1000 km = 1 cm.

If planet X has real size 13.000km, the size of model of planet X is ... cm.

The incorrect fact that show us if the Earth is not flat is ...

The Moon ... the Earth.

The different shapes of the Moon are called ...

There are ... phases of the Moon.

When the Moon is further away from the Sun than Earth, we see lots of the light side and only little of the dark side. This phases is called ... Moon.

When the Moon is the same distance away from the Sun as Earth, we see half of each side. This phase is called ... Moon.

When the Moon is closer to the Sun than Earth, we see only a little of the light side and lots of dark side. This phase is called ... Moon.

When the light side of the Moon is getting bigger, we say the Moon is ...

When the light side of the Moon is getting smaller, we say the Moon is ...

The "B" phase called ...

Waning gibbous shows by picture ...