Earth's Structure

This unit is all about the place every human and every other life form we know about has called home - Earth. Viewed from our perspective rock is constant and unchanging but there are colossal forces working over vast timescales that constantly remould the very planet we walk on. In fact we sit on a thin layer of solid rock floating on a vast ocean of superheated semi molten rock protected by a thin layer of gas called the atmosphere. Read on to find out more:

Task 3b: Make notes that:

• Define sediment

• Give the 3 types of weathering with a description for each

• Give the 6 stages for the formation of sedimentary rocks with a description for each.

• Describe how fossils form

• Suggest why fossils do not form in igneous rocks

This song might help you do the last 2 tasks a tiny bit:

Task 4c: Make notes that:

• Describe how igneous rocks form

• Give the two types of igneous rocks with a description for each

• Explain how cooling affects the size of crystals in igneous rocks

Task 5b: Make notes that:

• Define metamorphic rocks

• Give two conditions required for metamorphic rocks to form

• Explain where metamorphic rocks are most likely to be formed

• Complete the crossword on slide 20

Task 5c: Complete the exam questions and mark your answers

Task 6b: Make notes that:

• Write the word equation for marble reacting with hydrochloric acid

• Write the balanced symbol equation

• Give 2 factors that affect the rate of chemical weathering

Task 7b: Make notes that:

• Define the rock cycle

• Draw a labelled diagram to represent the rock cycle

• Imagine you are a grain of sand starting off in the rock cycle. Create a comic strip or write a series of diary entries explaining the processes and things that happen to you.

Task 7c: Complete the exam question and mark your answers

Complete the quiz to make sure you understand this unit.

Teat yourself with these exam questions:

If you found this topic interesting and have more questions you might find the answers in these videos