2F - 4. The Universe

What is the temperature at the surface of the Sun?

• 1,000°C

• 600°C

• 6,000°C

• 15 million°C

How long does it take for the Moon to complete one orbit around the Earth?

• 30 days

• 365 days

• 27.3 days

• 24 hours

What is the tilt of the Earth's axis?

• 15°

• 30°

• 45°

• 23.5°

What causes the Moon to be visible from Earth?

• It absorbs sunlight

• It reflects sunlight

• It emits its own light

• It is made of ice

What is the main component of the gas in our galaxy?

• Helium

• Hydrogen

• Carbon Dioxide

• Oxygen

What is a meteor?

• A large chunk of material that reaches the ground

• A streak of light caused by burning material in the atmosphere

• A comet that is close to the Sun

• A satellite orbiting the Earth

What happens to the core of a massive star when it explodes?

• It becomes a neutron star

• It turns into a black hole

• It collapses into a white dwarf

• It forms a supernova

What is the average time it takes for a planet to complete an orbit around the Sun?

• 30 days

• 27.3 days

• 365 days

• 24 hours

What is the name of our galaxy?

• Whirlpool

• Sombrero

• Milky Way

• Andromeda

What is a natural satellite of the Earth?

• Venus

• Mars

• The Sun

• The Moon