Homework Earth and rocks 1st week of topic

• Science
• Lower Secondary (Key Stage 3)

Homework Earth and rocks week 1

Planet Earth.

Name the layer of the Earth we walk on

1. Crust
2. Mantle
3. Inner core
4. Outer core

Which layer of the Earth's structure is made up of solid iron and nickel?

1. Inner core
2. Outer core
3. Crust
4. Mantle

What is the thickest layer of the Earth's structure?

1. Outer core
2. Inner core
3. Crust
4. Mantle

Where do tectonic plates exist in the Earth's structure?

1. Inner core
2. Outer core
3. Asthenosphere
4. Lithosphere

Which layer of the Earth's structure is divided into several pieces called tectonic plates?

1. Lithosphere
2. Crust
3. Mantle
4. Asthenosphere

What is the thinnest layer of the Earth's structure?

1. Outer core
2. Inner core
3. Mantle
4. Crust

What is the composition of the Earth's mantle?

1. Silicate rocks
2. Metallic minerals
3. Organic matter
4. Water and ice

At what depth does the Earth's mantle begin?

1. About 100 kilometers
2. At the Earth's surface
3. About 30 kilometers
4. About 500 kilometers

What is the temperature range of the Earth's mantle?

1. Room temperature
2. Approximately 500 to 900 degrees Celsius
3. Above 2000 degrees Celsius
4. Below freezing point

What is the main mechanism driving the movement of the Earth's mantle?

1. Tectonic plate collisions
2. Volcanic eruptions
3. Convection currents
4. Earthquakes

What role does the Earth's mantle play in the rock cycle?

1. It is the outermost layer of the Earth
2. It forms sedimentary rocks
3. It has no role in the rock cycle
4. It is the source of magma for volcanic activity

What percentage of the Earth's surface is covered by water?

1. 71%
2. 50%
3. 85%
4. 60%

What causes the Earth's seasons?

1. Distance from the Sun
2. Rotation speed
3. Tilt of the Earth's axis
4. Atmospheric pressure

What is the largest ocean on Earth?

1. Arctic Ocean
2. Atlantic Ocean
3. Pacific Ocean
4. Indian Ocean

Across the world how much did deaths by sharks increase by in 2023?

1. Doubled
2. Tripled
3. Quadrupled
4. Zero

What type of shark was shown in the image

1. Goblin shark
2. Great white shark
3. Greenland shark
4. Bull shark

How many unprovoked shark attacks were there in 2023

1. 55
2. 69
3. 64
4. 72

In 2023 how many fatalities were there?

1. 12
2. 11
3. 10
4. 9

In 2023 of the 10 fatalities how many were in Australia

1. 1
2. 2
3. 3
4. 4

How many attacks were provoked?

1. 20
2. 21
3. 22
4. 23

Of the 10 fatalities how many were surfers killed by Great White Sharks?

1. 4
2. 3
3. 2
4. 1

What is the scientific name for the great white shark?

1. Carcharodon carcharias
2. Carcharias carcharodon

What kills 150 people each year?

1. Sharks
2. Falling coconuts