Earth Science Quiz 2.1: Earth: A Unique Planet

What is the effect of Earth's rotation on its shape?

• It makes the Earth perfectly spherical

• It has no effect on the Earth's shape

• It makes the Earth slightly oblate, or flattened at the poles and bulging at the equator

• It makes the Earth slightly prolate, or elongated at the poles and compressed at the equator

What makes Earth unique in our solar system?

• Liquid water on its surface

• Large proportion of oxygen in its atmosphere

• Both A and B

• None of the above

How do scientists study Earth's interior?

• Direct observation

• Indirect methods like studying seismic waves

• Using telescopes

• Sending probes to the core

What are the compositional layers of Earth?

• Crust, mantle, core

• Lithosphere, asthenosphere, mesosphere

• Outer core, inner core

• None of the above

What is the lithosphere?

• The solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle

• The solid, plastic layer of the mantle beneath the lithosphere

• The strong, lower part of the mantle between the asthenosphere and the outer core

• The central part of the Earth below the mantle

Put the structural layers of the earth in order from where you are sitting (1) to the center of the earth (5).

• Lithosphere

• Asthenosphere

• Mesosphere

• Liquid Outer Core

• Solid Inner Core

What is the asthenosphere?

• The solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle

• The solid, plastic layer of the mantle beneath the lithosphere

• The strong, lower part of the mantle between the asthenosphere and the outer core

• The central part of the Earth below the mantle

Which compositional layer makes up two-thirds of the earth's mass?

• mantle

• atmosphere

• core

• crust

What is the possible source of Earth's magnetic field?

• Liquid iron in Earth's outer core

• Sun and moon's magnetic fields

• Both A and B

• None of the above

What is the magnetosphere of the Earth?

• The magnetosphere of the Earth is a region of intense gravitational pull around the Earth.

• The magnetosphere of the Earth is a layer of ozone in the Earth's atmosphere.

• The magnetosphere of the Earth is the region around the Earth where its magnetic field is dominant and protects the planet from the solar wind and cosmic radiation.

• The magnetosphere of the Earth is a layer of molten iron and nickel in the Earth's core.