Grade 7 Geography: Unit 1 (Vegetation (Vegetation interactions with…
Grade 7 Geography: Unit 1
Types of landforms
The base rock of an ancient mountain region that has been worn away, leaving a flat, rocky, landform region.
A high, flat, region that has been lifted up by earth’s movements.
A large, flat, gently rolling region.
Created by volcanic eruptions. A volcano is a mountain with lava.
A long, narrow region of low land in between mountains, hills, or other high areas.
Creation of Landforms
When the lithosphere gets pulled apart, magma flows out, and creates a volcanic mountain.
Erosion creates valleys.
When the sea level decreases, the land below turns to a plain.
Ice erosion makes valleys.
Humans create mines.
Happens when tectonic plates go under or scrape each other.
The “Ring of Fire” is the place with the most earthquakes.
Can cause tsunamis.
Has enough force to obliterate buildings.
Can be measured by a seismometer.
Lava flows out of a volcano.
Lava moves slowly, allowing people more time to escape.
Hot gases, ash, and rocks are thrown into the air from an eruption.
Gases make it hard to breathe.
Ash can bury entire cities.
Can have a huge impact on humans living in the area.
Hot and dry climates will change the types of crops that can be grown.
Melting ice around the world.
Causes sea level to rise.
Can cause floods.
Can cause hurricanes or tornadoes.
Affects food production.
Makes new diseases.
What affects climate?
Relief (The difference of height between the highest and lowest points in an area).
Causes of Climate Change
Too much energy received from the sun.
The Greenhouse Effect.
Energy Production (Pollution)
Natural Vegetation Regions
Benefits of Vegetation
Can be natural habitats.
Can be made into resources.
Can be recreation for people.
People may have spiritual connections toward vegetation.
Vegetation interactions with natural factors
Latitude and elevation
Changing vegetation patterns
We are creating more deserts.
We are reducing natural vegetation.
We are causing forest loss.
We are burning grasslands.
Changing vegetation effects on species
Loss of biodiversity.
Loss of habitat.
Loss of species.
Rise in non-native species.
Oceans and Rivers
Earth's Water Sources
Ice caps and glaciers
Swamps and marshes
Parts of a River
Patterns of the Ocean
How people are changing oceans and rivers.
Creating new river channels.
Destroying ocean habitats.
Protecting rivers and oceans