Savvas 6th Grade Weathering and Soil Test

Last updated almost 3 years ago

28 questions

1

2

3

2

3

2

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Savvas 6th Grade Weathering and Soil Test

Last updated almost 3 years ago

28 questions

1

Some plants produce acids that result in _______  weathering.

1

Sandy topsoil is said to be _______  because water drains quickly through the spaces between the sand particles.

1

The actions of animals most commonly can cause the type of weathering known as _______ .

1

Water and wind can _______  soil, or carry it away.

1

Two factors that determine the rate of weathering are the type of rock and the _______.

1

2

In which layer of soil in the illustration would you find humus? What is the soil in this layer called?

2

Using the above diagram, Which layer of soil in the illustration is made up only of partly weathered rock? What is this layer called?

3

Describe three ways farmers can prevent nutrient depletion.

2

How are landslides and mudflows similar? How are they different?

3

For hundreds of years, an ancient statue had been kept outdoors in a country with a dry, mild climate. A U.S. city bought the statue and placed it outdoors in a park. The city has hot, rainy summers, freezing winter temperatures, and air pollution from the burning of coal in a power plant. Predict how the city’s climate will affect the weathering of the statue

2

Why is soil so important to people and living things?

When earthworms add their wastes to the soil, then die and decay in the soil, they are contributing to the formation of

silt 

litter

humus

clay

The process of restoring an area of land to a more natural, productive state is called

erosion

desertification.

 nutrient depletion.

land reclamation.

Landslides, mudflows, slump, and creep are all examples of

mechanical weathering

run off 

mass movement

soil formation

Granite lasts a long time when it is used for building in areas where

repeated freezing and thawing is common.

the climate is mostly cool and dry.

acid rain is common

climate is hot and rainy

The process by which natural forces move weathered rock and soil from one place to another is called

soil erosion

abrasion

deposition

erosion

Geologists infer from the rounded, eroded shapes of the Appalachian Mountains that

the principle of uniformitarianism does not apply.

the mountains formed recently.

the mountains are made of soft rock

the mountains have been eroding for millions of years.

In a cross section of soil, the B horizon consists of

clay, minerals, and little humus.

humus only

partly weathered rock

topsoil

A marble statue is left exposed to the weather. Within a few years, the details on the statue have begun to weather away. This weathering probably is caused by

oxygen in the air

lichens 

carbonic acid in rain water 

abrasion

The type of soil called loam is made up of

pure humus

mostly clay

nearly equal amounts of silt, sand, and clay

sand and gravel

Some plants produce acids that result in _______  weathering.

Sandy topsoil is said to be _______  because water drains quickly through the spaces between the sand particles.

The actions of animals most commonly can cause the type of weathering known as _______ .

Water and wind can _______  soil, or carry it away.

Two factors that determine the rate of weathering are the type of rock and the _______.

Creep is very slow movement of sediment down a slope.

True

False

To restore soil’s fertility, a farmer might plant legumes as part of a soil conservation technique called nutrient depletion.

True

False

A type of land use called mining involves the removal of nonrenewable resources from the land

True

False

The movement of rock particles by ice, wind, water, or gravity is called weathering.

True

False

After chemical weathering, the chemical makeup of the weathered rock is the same as that of the original rock.

True

False

Most of the work of mixing humus within the soil is done by

fungi

ants 

earthworms 

bacteria

What can cause the loss of soil that is not protected by plant cover?

chemical weathering

erosion by water or wind

mechanical weathering

too many organisms in the soil 

Plowing removed the grass from the Great Plains and exposed the soil. What effect did this have when a drought struck the Great Plains during the 1930s?

It had no effect.

It reduced the soil's fertility.

It helped to cause the Dust Bowl. 

It allowed the soil to hold mositure better.

In which layer of soil in the illustration would you find humus? What is the soil in this layer called?

Using the above diagram, Which layer of soil in the illustration is made up only of partly weathered rock? What is this layer called?

Describe three ways farmers can prevent nutrient depletion.

How are landslides and mudflows similar? How are they different?

For hundreds of years, an ancient statue had been kept outdoors in a country with a dry, mild climate. A U.S. city bought the statue and placed it outdoors in a park. The city has hot, rainy summers, freezing winter temperatures, and air pollution from the burning of coal in a power plant. Predict how the city’s climate will affect the weathering of the statue

Why is soil so important to people and living things?

When earthworms add their wastes to the soil, then die and decay in the soil, they are contributing to the formation of

silt 

litter

humus

clay

The process of restoring an area of land to a more natural, productive state is called

erosion

desertification.

 nutrient depletion.

land reclamation.

Landslides, mudflows, slump, and creep are all examples of

mechanical weathering

run off 

mass movement

soil formation

Granite lasts a long time when it is used for building in areas where

repeated freezing and thawing is common.

the climate is mostly cool and dry.

acid rain is common

climate is hot and rainy

The process by which natural forces move weathered rock and soil from one place to another is called

soil erosion

abrasion

deposition

erosion

Geologists infer from the rounded, eroded shapes of the Appalachian Mountains that

the principle of uniformitarianism does not apply.

the mountains formed recently.

the mountains are made of soft rock

the mountains have been eroding for millions of years.

In a cross section of soil, the B horizon consists of

clay, minerals, and little humus.

humus only

partly weathered rock

topsoil

A marble statue is left exposed to the weather. Within a few years, the details on the statue have begun to weather away. This weathering probably is caused by

oxygen in the air

lichens 

carbonic acid in rain water 

abrasion

The type of soil called loam is made up of

pure humus

mostly clay

nearly equal amounts of silt, sand, and clay

sand and gravel

Creep is very slow movement of sediment down a slope.

True

False

To restore soil’s fertility, a farmer might plant legumes as part of a soil conservation technique called nutrient depletion.

True

False

A type of land use called mining involves the removal of nonrenewable resources from the land

True

False

The movement of rock particles by ice, wind, water, or gravity is called weathering.

True

False

After chemical weathering, the chemical makeup of the weathered rock is the same as that of the original rock.

True

False

Most of the work of mixing humus within the soil is done by

fungi

ants 

earthworms 

bacteria

What can cause the loss of soil that is not protected by plant cover?

chemical weathering

erosion by water or wind

mechanical weathering

too many organisms in the soil 

Plowing removed the grass from the Great Plains and exposed the soil. What effect did this have when a drought struck the Great Plains during the 1930s?

It had no effect.

It reduced the soil's fertility.

It helped to cause the Dust Bowl. 

It allowed the soil to hold mositure better.