Chemistry 7 Our Changing Planet GCSE core

Name the main parts of the earth, starting from its centre.

Why should we be careful not to waste the earth's resource's

Name three gases that scientists think were in the Earth's early atmonsphere

Name Four gases that are now in the atmosphere

How did the oceans form?

What what the effect of algae and plants on the early atmosphere?

What are tectonic plates?

Why do tectonic plates move?

How much do tectonic plates move in a year and what is this called?

What happens at plate boundaries?

Why have the amounts of of gases in the atmosphere been the same for almost 200 Million years?

How are the main gases in the air separated?

What is used in industry as raw materials?

Why were Wegners ideas not accepted untill the 1960's?

Why are there so many theories about how life began?

What did Miller and Urey find in their experiment?

What was Miller and Ureys experiment?

What is meant by 'Primordial Soup'?

Why is the fractional distillation of liquid air done industrially?

Explain briefly how Fractional distillation of liquid is done?