Earth's Changes

How are Sedimentary Rocks formed?

• Cooling and Hardening

• Heat and Pressure

• Compacting and Cementing

• Melting

Answer explanation

Sedimentary rocks are formed through the processes of compacting and cementing sediment particles together over time.

Tags

NGSS.MS-ESS1-4

In what kind of rock can fossils be found?

• Sedimentary Rocks

• Igneous Rocks

• Metamorphic Rocks

• Granite

Answer explanation

Fossils are typically found in Sedimentary Rocks where layers of sediment accumulate over time, preserving remains of plants and animals.

Tags

NGSS.MS-LS4-1

How are fossils created?

• Traces of organisms get turned into stone.

• Dead organisms are quickly buried for millions of years.

• Animals get trapped.

• All of the above

Answer explanation

Fossils are created when traces of organisms turn into stone, dead organisms are quickly buried for millions of years, and animals get trapped.

How are fossils created?

• Traces of organisms get turned into stone.

• Dead organisms are quickly buried for millions of years.

• Animals get trapped.

• All of the above

Answer explanation

Fossils are created when traces of organisms turn into stone, dead organisms are quickly buried for millions of years, or animals get trapped. Therefore, all of the above options are correct.

What are the 3 main fossil fuels?

• Coal, Oil, and Gasoline

• Coal, Oil, and Natural Gas

• Electricity, Gasoline, Petroleum

• Coal, Oil, Non-renewable Resources

Answer explanation

The 3 main fossil fuels are Coal, Oil, and Natural Gas. These are non-renewable resources that are commonly used for energy production.

Tags

NGSS.MS-ESS2-1

Some students made a model to show one of the first steps in the formation of sedimentary rock.  The students pour 2 cm of light-colored sand into a clear plastic box.  Then they add 1 cm of gravel.  Finally, they pour 2 cm of dark-colored sand on top of the gravel.  Which characteristic of sedimentary rock does this model best show?

• Sedimentary rock is made of layers.

• Sedimentary rock is cemented bits of rock.

• Sedimentary rock is often limestone.

• Sedimentary rock is common in Texas.

Answer explanation

The model demonstrates the layering characteristic of sedimentary rock, where different materials are deposited in distinct layers over time.

What changes buried organic matter into fossil fuels?

• Industrial Pollution

• Ocean Currents

• Volcanic Activity

• Heat and Pressure

Answer explanation

Heat and pressure transform buried organic matter into fossil fuels over millions of years, not industrial pollution, ocean currents, or volcanic activity.

Tags

NGSS.MS-ESS2-1

Which layer formed first?

• Rock Layer W

• Rock Layer X

• Rock Layer Y

• Rock Layer Z

Answer explanation

Rock Layer Z formed first as it is the bottom layer in the sequence of rock layers, indicating it was deposited before the other layers.

Tags

NGSS.MS-ESS1-4

Sedimentary rocks form when broken bits of other rock are deposited and then -

• buried and squeezed and cemented together

• melted by the heat of the Earth's core

• completely dissolved in the salt water of the ocean 

• used by humans as a natural resource

Answer explanation

Sedimentary rocks form when broken bits of other rock are deposited, buried, squeezed, and cemented together.

Tags

NGSS.MS-ESS2-1

The Appalachian Mountains used to be pointed like the Rockies. What process lead to the roundedness of their peaks?

• Weathering

• Deposition

• Lightning Strikes

• Mining of the rock

Answer explanation

Weathering is the process that lead to the roundedness of the Appalachian Mountains' peaks by breaking down and wearing away the rock over time.

Tags

NGSS.MS-ESS2-2