Choose the correct alternative.

1. How large is planet Earth's atmosphere when compared to the rest of the planet?

Like an orange peel compared to the rest of the orange.
Like a banana peel compared to the rest of the banana.
Like an apple peel compared to the rest of the apple.
Like a melon peel compared to the rest of the melon.
Like a coconut shell compared to the rest of the coconut.

2. Which of the following statements is false?

The Moon has no atmosphere.
The Moon's surface contains no oxygen gas.
It is impossible to breathe on the Moon.
The Moon's surface contains nitrogen gas.
The Moon's gravity is too weak to maintain an atmosphere.

3. What holds the atmosphere of planet Earth in place?

dense clouds
magnetism
gravity
solar radiation
electromagnetic air

4. Which of the following statements is false?

The atmosphere contains no layers.
The higher you go, the cooler the temperature becomes.
The higher you go, the thinner the air becomes.
The atmosphere lets solar radiation in but keeps it from being reflected back to space.
The atmosphere creates the greenhouse effect.

5. What does the greenhouse effect do?

Nothing.
It increases the risk of earthquakes.
It grows the planet's atmosphere.
It makes the planet's atmosphere cooler.
It makes the planet's atmosphere warmer.