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12) What is the Earth’s crust made up of? [ ]
a) molten lava b) water c) huge rocks d) sand

13) Which machine measures earthquakes? [ ]

a) seismograph b) scale
c) barometer d) thermometer

14) Why does the pressure under the Earth increase? [ ]

a) because of earthquakes
b) because of the plates rubbing together

c) due to cold
d) because of the weight of people

15) How does the Earth ease the increased pressure? [ ]

a) by causing rain b) by keeping it inside the crust

c) by causing famines d) by trembling and breaking apart

Connect the Dots

Science Fun

One of the explorers asked Akio about the centre of the Earth. Here
are a few interesting facts about the innermost part of the Earth.

• The innermost part of the Earth is called the core.

• It is made of hot metals such as iron and nickel.
• The core can be divided into an inner and outer core.

• The outer core is made of molten metals because it is hot. the core of the
Earth
• The inner core is made of solid metal because the pressure is great.

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