Ch 7 Weathering & Erosion

What are the processes that keep the rock cycle moving?

• Weathering

• Rain

• Wind

• Erosion

Physical weathering ___

• Breaks down big rocks into smaller ones and changes its minerals

• Breaks big rocks into smaller ones without changing its minerals

• Puts small rocks together with glue

• Plants use the weather to form new and bigger rocks

_____ is caused by water expanding as it freezes inside of the cracks of a rock's surface.

• Expanding

• Fishing

• Ice wedging

• Ice skating

Animals, such as chipmunks and badgers, cause rocks to weather by

• digging holes in the rocks/surface

• using their strength to break cracks apart

• throwing rocks at each other

• building ice houses

Breaking down rocks by changing the minerals they contain is caused by __

• Physical Weathering

• Chemical weathering

• Ultimate Weathering

• Acid Weathering

Acid rain changes the ___ and ___ of rocks.

• shape, color

• shape, shape

• size, durability

• tyoe, color

Erosion is the process of ___

• moving rocks or sediments to new locations by animals and plants

• moving rocks or sediments to new locations by people and cars

• moving rocks or sediments to new locations by Bill Nye

• moving rocks or sediments to new locations by wind, water, ice, and gravity

Over time rocks and pebbles on the beach are broken down into many tiny pieces of sediment, also called "sand". This is a process caused by ___

• weathering

• erosion

• deposition

• all of them

Some plants release rock-weathering substances. For example, under a patch of moss growing on a rock, you might see little pits or holes in the surface. This is due to acid from the moss plant. This is an example of ____

• Physical Weathering

• Moss poison

• Chemical Weathering

• Chemical Erosion

As a result of weathering, rocks are ultimately broken down into smaller pieces or _____

• Gravel

• Sediments

• Pebbles

• Boulders