Scientific term
Used to wind energy source to crash grains
Windmills
Water behind a dam has ……….. energy.
Potential
Water- wood - Charcoal - liquid biofuel
Water
Fossil fuels is considered non- renewable resource
Because it cannot be replaced as quickly as they are used
If people decrease burning fossil fuels.
Decrease the percentage of carbon dioxide in the atmosphere
They are deep valleys carved by flowing water
Canyon
Living organisms cause ……….. weathering.
Chemical
Erosion- evaporation- weathering- Deposition
Evaporation
Increasing the amount of carbon dioxide gas in the air could harm the environment.
Because it causes acidic rains and climate changes.
acid rain falls on buildings for a long period of time.
Dissolving the rocks of the building
Breaking down the rocks into pieces without any change in its structure
Mechanical weathering
The Grand Canyon is a landform located in …….……
United States ( America)
Wind - temperature- plant roots- Acid rains
Acid rains
There is a difference between erosion and weathering.
Because Weathering is a process of breaking down of rocks into small particals ( sediments )
While erosion is the process of movement of sediments from place to another
river carries sediments meet a sea.
Delta is formed
They are lowland areas in between mountains and have gently sloped sides around river
Valley
Wind and sand work together as forces of ………and ………
Erosion and deposition
Sand dunes- delta- weathering- sedimentary rocks
Weathering
Valleys have different shapes.
Because it’s formation depends on the type of rocks exists in landscape
And the speed, age and size of river form the valley
To a house that is built close to a river, if the path of the river is changed toward this house.
Weathering process then erosion process may occur
Very fine bits of sand, clay, or rock materials
Silt
From the examples of canyons are ………and …….………
Wadi nakhr- wadi rum- colored canyon
Remove paints- breaking down of rocks - dissolve of rocks by acids - evaporate the water
evaporate the water
Iron in rocks may rust.
Due to the reaction of oxygen with the iron cause chemical weathering and change into red color
If a rock blocks tha path of sand that is carried by wind.
Sand dune will be formed