Science Test 2 Flashcards
weathering
the wearing away and breaking down of rocks into smaller pieces
erosion
the carrying of weathered rocks to a new location
deposition
dropping of eroded rocks which will form other land features.
glaciers
slow moving masses of ice
What are the causes of erosion?
water
wind
glaciers/ice
gravity
Weathering and erosion work together to cause_______________
the Earth’s surface to change over a long period of time
What can grow into cracks and break large rocks into smaller pieces?
plant roots
What can prevent soil from being blown or washed away?
plant’s roots hold soil in place
What would cause a canyon to form?
erosion from rivers and glaciers
What would cause a delta to form?
deposition from rivers
What would cause a desert to form?
Wind
What can the shifting of tectonic plates can cause?
volcanic eruption
earthquakes
landslides
What are the four layers of the Earth?
crust
mantel
outer core
inner core
Crust
thinnest layer made of rock
Mantel
thickest layer made of liquid
outer core
made of iron and nickel
inner core
made of iron and nickel
What would cause there to more earthquakes and volcanoes to happen in certain area of the world?
This would be cause by moving and shifting of tectonic plates
How can humans change the earth’s surface?
mining
farming
wind turbines
solar panels
dams
What is a pro and con of mining?
Pro: we gain minerals and fuel sources
Con: damages Earth’s surface and animal habitats
What is a pro and con of farming?
Pro: provides livestock and crops for feeding
Con: herbicides, pesticides, and over farming can harm soil nutrients
What is a pro and con of wind turbines?
Pro: alternative energy source
Con: use of land which can be habitat loss or loss other type of usage
What is a pro and con of solar panels?
Pro: alternative energy source
Con: use of land which can be habitat loss or loss other type of usage
What is a pro and con of dams?
Pro: alternative energy source, irrigation
Con: possible flooding and droughts dependent on dam control
What is a renewable resource?
natural resources that can be replaced
What is some examples of a renewable resources?
sun
plants/animals
water
wind
What is a nonrenewable resource?
natural resources that cannot be easily replaced
What are some examples of nonrenewable resources?
oil
coal
natural gas
metals
uranium
What are some alternative energy sources we use today?
wind turbine
solar panels
dams
