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A ________________ is a part of Earth’s surface that has a certain shape and is formed naturally.
landform
Pollution is the addition of harmful materials to the environment.
true
Name 3 landforms we talked about in class.
valley, plateau, canyon, plain, mountain, volcano
What two kinds of water are found on Earth?
Fresh water, salt water
_____________________ is the addition of harmful materials to the environment.
pollution
The thin outermost layer of Earth is called the ________________ .
crust
A valley is a raised part of the land, usually with steep sides, that rises above the area around it.
false (plateau)
Name all 3 layers of the Earth.
crust, mantle, core
What are two causes of rapid changes to Earth’s surface?
Volcanic eruptions, earthquakes
Most of the water on Earth is salt water
True (97%)
The loose material that covers much of earth's surface is ______________.
soil
Rocks that form when other rocks are changed by heat and pressure are igneous.
False (metamorphic)
Name the three kinds of rocks we learned about.
igneous, metamorphic, sedimentary
Where do natural resources come from?
The Earth
Name two kinds of alternate energy resources discussed in the book.
hydroelectric, geothermal, wind, solar, hydrogen
_____________________ are materials from Earth that are useful to people.
natural resources
The breaking up or wearing away of rock is a process called erosion.
false (weathering)
Name 2 of the natural resources we learned about in the book.
plants, animals, water, air
What is hydroelectric energy?
It is energy that comes from moving water
What is the name of the highest mountain peak on Earth?
Mount Everest
_______________ are fuels that form over time from the remains of plants and animals.
fossil fuels
Renewable resources are natural resources that can be replaced by nature.
True
Name the 3 R's of Conservation
Reduce, Reuse, Recycle
According to the book, what is a major source of air pollution?
The burning of fossil fuels
WHat is formed when melted rock from inside Earth cools and hardens?
igneous rock