Show:
Rocks
Rock Cycle
Weathering
Erosion
Soil
100
How many types of rocks are there?
three
100
What is the rock cycle definition?
A sequence of processes that change rocks over a period of time. It works slowly and never stops!
100
What is weathering?
The breaking down of rock on Earth’s surface into smaller pieces.
100
What is the definition of erosion?
The process of moving sediment.
100
What is the largest part of soil?
Weathered Rock
200
What are the names of the three types of rocks?
Igneous Metamorphic Sedimentary
200
How does a sedimentary rock turn into a metamorphic rock?
Heat and pressure
200
When rain enters cracks in cement, water freezes into ice and what happens?
It expands, cracking the rock.
200
Wind erosion takes places mostly where?
In a desert
200
What is almost 50% of soil?
Sediments
300
This type of rock forms when melted rock cools and hardens
Igneous
300
How does a metamorphic rock turn into an igneous rock?
melting into magma and cooling into rock
300
In what kind of environment would more weathering occur?
A place that has a lot of precipitation and temperature change.
300
What are the three main causes of erosion?
Water(ice), wind, and glaciers
300
What is humus?
remains of decayed plants and animals
400
This type of rock forms from sediment which is carried by water, wind and ice
Sedimentary
400
How does an igneous rock turn into sediments?
weathering and erosion
400
What physical processes cause weathering?
Water, ice, living things, changes in temperature and wind.
400
How can water cause erosion?
It can carry sediment and leave it on a shore or coastline.
400
What three things do the roots draw up through soil?
Nutrients, water, and oxygen
500
This type of rock has changed from another type of rock due to high temperature and pressure.
Metamorphic
500
How do sediments turn into a sedimentary rock?
Compaction and cementation
500
What do large ocean waves do to coastlines?
They can weather coastlines. Waves smash onto a cliff, causing rocks to fall into the sea.
500
What does wind erosion create in deserts?
Sand Dunes
500
What kind of fertilizer is better for the Earth and soil?
Natural Fertilizer