Unit 3 Formation of the Earth Test

Front

What gas was absent in the 'first' atmosphere of Earth?

Back

Oxygen

Front

Which statement is NOT true about the inner planets?

Back

They are called gas giants.

Front

What is the name of the physical layer of soft mantle that tectonic plates move on?

Back

Asthenosphere

Front

Which physical layer of the Earth is solid and made of Iron & Nickel?

Back

Inner core

Front

What gas did Cyanobacteria contribute to the atmosphere through photosynthesis?

Back

Oxygen

Front

What are the inner planets primarily made of?

Back

Solid rock

Front

Do inner planets have rings?

Back

No, they do not have rings.

Front

What is the outer layer of the Earth called?

Back

Lithosphere

Front

What is the process by which Cyanobacteria produced oxygen?

Back

Photosynthesis

Front

What is the main difference between the inner and outer core?

Back

The inner core is solid, while the outer core is liquid.