Choose the correct alternative

1. What is the Sun?

a planet
a moon
a meteoroid
an asteroid
a star

2. Which of the following is not a rocky planet?

Venus
Mars
Earth
Mercury
Saturn

3. Which of the following is not a gas planet?

Saturn
Jupiter
Neptune
Venus
Uranus

4. Which of the following things is not found inside our solar system?

comets
moons
galaxies
asteroids
planets

5. What happens in the Sun's nuclear reactions?

hydrogen transforms into ice
snow transforms into ice
hydrogen transforms into hydrogen gas
hydrogen atoms form a helium atom
helium atoms form a hydrogen atom

6. If a meteoroid reaches the surface of the Earth, what is it called?

a planetoid
a meteor
a meteorite
a meteorologist
an asteroid

7. What is the largest planet in our solar system?

Uranus
Earth
Neptune
Saturn
Jupiter

8. What is the name of our galaxy?

Pluto
the Big Dipper
the Milky Way
Cassiopeia
Ceres