Earth Science

The mantle is made of melted, molten rock called

• magma

• limestone

• sand

• iron

Answer explanation

The mantle is made of melted, molten rock called magma, not limestone, sand, or iron. Magma is the correct choice.

The line of volcanoes that surround the Pacific Ocean's subduction zone is referred to as the

• Trench Ridge

• Hot Spot

• Ring of Fire

• Mid-Ocean Ridge

Answer explanation

The correct answer is 'Ring of Fire' because it refers to the line of volcanoes surrounding the Pacific Ocean's subduction zone.

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS3-2

NGSS.MS-ESS2-2

What is the opening in Earth's crust through which molten rock, gases, and ash erupt?

• Divergent Boundary

• Magma

• Subduction Boundary

• Volcano

Answer explanation

A volcano is the opening in Earth's crust through which molten rock, gases, and ash erupt, making it the correct choice.

What is the shaking of the Earth’s crust caused by a release of energy?

• Earthquake

• Epicenter

• Fault

• Plate

Answer explanation

The shaking of the Earth's crust caused by a release of energy is known as an earthquake. It is the correct choice among the options provided.

Tags

NGSS.MS-ESS3-2

What is a break in the lithosphere along which movement in an earthquake has first occurred?

• Earthquake

• Epicenter

• Fault

• Focus

Answer explanation

A break in the lithosphere along which movement in an earthquake first occurs is called a fault.

Where is the point on the Earth’s surface directly above the focus of an earthquake?

• Epicenter

• Fault

• Hypocenter

• Tremor

Answer explanation

The point on the Earth's surface directly above the focus of an earthquake is called the epicenter. It is where the seismic waves originate and is crucial for determining the impact of the earthquake.

The Law of Superposition helps scientists to determine what?

• The absolute age of rock layers

• The age of fossils

• The relative age of rock layers

• the super powers of squirrels

Answer explanation

The Law of Superposition helps scientists determine the relative age of rock layers by stating that in undisturbed layers, the oldest rocks are at the bottom and the youngest are at the top.

Tags

NGSS.MS-ESS1-4

Which rock layer in the diagram seems to be the oldest?

• F

• E

• B

• A

Answer explanation

The rock layer A seems to be the oldest because it is at the bottom of the diagram, indicating it was deposited first according to the law of superposition.

Tags

NGSS.MS-ESS1-4

Put the layers in order from oldest to youngest.

• a, b, c, d, e

• b, c, d, a, e

• b, c, d, e, a 

• e, d, c, b, a

Answer explanation

The correct order is b, c, d, a, e because layers are typically deposited in sequence, with the oldest at the bottom and the youngest at the top.

Tags

NGSS.MS-ESS1-4

Which of the following rock layers is relatively the oldest?

• H

• P

• L

• M

Answer explanation

The relatively oldest rock layer is M as it is located at the bottom of the sequence, following the principle of superposition where older rocks are found below younger rocks.

Tags

NGSS.MS-ESS1-4