Front

How many main spheres work together to make Earth a lovely place?

Back

four

Front

Hydro comes from the Greek word for _____

Back

water

Front

All of the water on Earth is in the _____

Back

hydrosphere

Front

Which sphere contains all of the gases on the planet? Options: atmosphere, hydrosphere, biosphere, geosphere

Back

atmosphere

Front

Atmos comes from the Greek word for _____

Back

air

Front

Which sphere reaches everywhere and covers the entire planet like a giant snuggly blanket?

Back

atmosphere

Front

Which layer of the atmosphere contains 80% of the air on the planet? Options: the troposphere, the stratosphere, the mesosphere, the exosphere

Back

the troposphere

Front

Which layer of the atmosphere is the coldest? Options: the troposphere, the stratosphere, the mesosphere, the exosphere

Back

the mesosphere

Front

In which layer of the atmosphere might you bump into some satellites? Options: the thermosphere, the stratosphere, the mesosphere, the exosphere

Back

the thermosphere

Front

Which layer of the atmosphere is the highest you can go and still be on Earth? Options: the troposphere, the stratosphere, the mesosphere, the exosphere

Back

the exosphere