Rocks Rock Cycle Weathering Erosion Soil

100

three
How many types of rocks are there?

100

A sequence of processes that change rocks over a period of time. It works slowly and never stops!
What is the rock cycle definition?

100

The breaking down of rock on Earth’s surface into smaller pieces.
What is weathering?

100

The process of moving sediment.
What is the definition of erosion?

100

Weathered Rock
What is the largest part of soil?

200

Igneous Metamorphic Sedimentary
What are the names of the three types of rocks?

200

Heat and pressure
How does a sedimentary rock turn into a metamorphic rock?

200

It expands, cracking the rock.
When rain enters cracks in cement, water freezes into ice and what happens?

200

In a desert
Wind erosion takes places mostly where?

200

Sediments
What is almost 50% of soil?

300

Igneous
This type of rock forms when melted rock cools and hardens

300

melting into magma and cooling into rock
How does a metamorphic rock turn into an igneous rock?

300

A place that has a lot of precipitation and temperature change.
In what kind of environment would more weathering occur?

300

Water(ice), wind, and glaciers
What are the three main causes of erosion?

300

remains of decayed plants and animals
What is humus?

400

Sedimentary
This type of rock forms from sediment which is carried by water, wind and ice

400

weathering and erosion
How does an igneous rock turn into sediments?

400

Water, ice, living things, changes in temperature and wind.
What physical processes cause weathering?

400

It can carry sediment and leave it on a shore or coastline.
How can water cause erosion?

400

Nutrients, water, and oxygen
What three things do the roots draw up through soil?

500

Metamorphic
This type of rock has changed from another type of rock due to high temperature and pressure.

500

Compaction and cementation
How do sediments turn into a sedimentary rock?

500

They can weather coastlines. Waves smash onto a cliff, causing rocks to fall into the sea.
What do large ocean waves do to coastlines?

500

Sand Dunes
What does wind erosion create in deserts?

500

Natural Fertilizer
What kind of fertilizer is better for the Earth and soil?

Earth Science: rocks, rock cycle, soil, weathering and erosion

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