Grade 5 Geography Quiz

What is the process of mechanical weathering?

• Melting rocks into liquid form

• Changing the color of rocks

• Causing rocks to grow in size

• Breaking down rocks into smaller pieces without changing their chemical composition

Give an example of mechanical weathering.

• Volcanic eruption

• Chemical weathering

• Frost wedging

• Tectonic plate movement

How does mechanical weathering differ from chemical weathering?

• Mechanical weathering involves chemical reactions, while chemical weathering involves physical processes.

• Mechanical weathering and chemical weathering are the same thing.

• Mechanical weathering only occurs in hot climates, while chemical weathering only occurs in cold climates.

• Mechanical weathering involves physical processes like freezing and thawing, while chemical weathering involves chemical reactions that break down rocks.

Describe the process of frost wedging and how it leads to mechanical weathering.

• Frost wedging is a process where rocks are broken down by the pressure of ice freezing within their cracks

• Frost wedging is a process where rocks are melted by the heat of the sun

• Frost wedging is a process where rocks are eroded by wind and water

• Frost wedging is a process where rocks are dissolved by chemical reactions

What role do plant roots play in mechanical weathering?

• Breaking apart rocks

• Absorbing sunlight for photosynthesis

• Providing nutrients to the soil

• Preventing erosion

How are sedimentary rocks formed?

• Through the process of evaporation and crystallization of minerals.

• Through the process of volcanic activity and cooling of magma.

• Through the process of erosion and weathering of rocks.

• Through the process of deposition, compaction, and cementation of sediments.

List the three main types of sedimentary rocks.

• granite, marble, and sandstone

• igneous, metamorphic, and volcanic

• limestone, shale, and slate

• clastic, chemical, and organic

Explain the process of compaction in the formation of sedimentary rocks.

• Breaking sediments into smaller pieces with water

• Blowing sediments away with wind

• Melting sediments with heat

• Squeezing and pressing sediments together by the weight of overlying sediments

What is the significance of cementation in the formation of sedimentary rocks?

• Cementation leads to the formation of igneous rocks

• Cementation causes the sediment particles to disintegrate

• Cementation helps in binding the sediment particles together to form sedimentary rocks.

• Cementation has no role in the formation of sedimentary rocks

Describe the role of organic matter in the formation of sedimentary rocks.

• Organic matter is only found in igneous rocks

• Organic matter causes sedimentary rocks to break apart

• Organic matter can contribute to the formation of sedimentary rocks by being compressed and cemented with other sediments over time.

• Organic matter has no role in the formation of sedimentary rocks