REVISION THE GEOLOGY OF THE PLANET

 READ, COPY AND ANSWER:

1-Complete the sentences with the correct layer of the Earth.

1. The top layer of the Earth is …... 

2. Under the top layer of the Earth we find the ….... 

3. The inner layer of the Earth is known as…....

4. This layer is made up of liquid and solid iron...............

5. This layer is THE THICKEST layer

6. This layer is the thinnest............

2-Write true or false. Correct the false statements. 

1. Bays are found on the coast.

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2. Valleys are on top of mountains.

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3. Plains are mostly flat. 

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4. The tectonic plates don’t move.

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3-What are the four spheres of the Earth?

1. __________________________________

2. __________________________________

3. __________________________________

4. __________________________________

4-Identify the thickness of the following layers.

5-Answer the questions.  

1. Which solid layer is colder than the mantle?

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2. Which layer is hotter than the outer core?

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6-Complete the text: semi liquid- crust-tectonic-different

The Earth's _______ is like a giant puzzle: it’s made up of __________ pieces that

fit together. We call these pieces ________ plates. Tectonic plates float on the  

__________ mantle, so they don’t stay still.

 7-Fill in the blanks.

1. The Nazca Plate is between the South American Plate and the __________________.

2. The Pacific Plate, the Nazca Plate and the South American Plate are below the
   
   ________________.

3. The southern most Plate is the _____________________. 

4. The Eurasian Plate is above the African Plate and the _____________________.

8-Complete the sentence with the following words: lava, ground, gases and air.

When a volcano erupts, very hot _____ and ash are ejected into the _____, and _____ flows over the __________.

9-Write true or false. Correct the false statements. 

1. Tectonic plate movement only causes volcanoes to form.

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2. Gases and ash cause respiratory problems. 

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3. Earthquakes occur in the middle of tectonic plates.

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4. Hot gases, ash and lava have got many destructive effects.

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10-How can you stay safe during an Earthquake?

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