6th Grade Science MIDTERM: Chapter 3 Flashcards
Renewable or Nonrenewable
coal
Nonrenewable
Renewable or Nonrenewable
geothermal energy
Renewable
Renewable or Nonrenewable
hydroelectric energy
Renewable
Renewable or Nonrenewable
natural gas
Nonrenewable
Renewable or Nonrenewable
nuclear energy
Nonrenewable
Renewable or Nonrenewable
petroleum
Nonrenewable
Which energy resource is not a fossil fuel?
a. coal
b. hydroelectric energy
c. natural gas
d. petroleum
b. hydroelectric energy
Which problem would not occur as a result of using fossil fuels?
a. air pollution
b. oil soils
c. radioactive pollutiond. production of soot and sulfur gases
c. radioactive pollution
A farmer needs to keep his fields from eroding during the seasons that crops are not planted on them. Which method should he use?
a. using contour plowing
b. planting a ground cover
c. letting the fields lie fallow for a season
d. digging for minerals
b. planting a ground cover
A farmer has grown corn on several fields for the last 30 years, but now corn production is steadily decreasing. What can the farmer do to increase corn production?
a. planting a ground cover
b. using contour planting
c. letting the fields lie fallow for a season
d. using geothermal energy
c. letting the fields lie fallow for a season
Which disadvantage is associated with the use of wind energy and solar energy?
a. requires heavy maintenance
b. causes pollution
c. requires large land areas
d. does not use water
c. requires large land areas
What is an advantage of using geothermal energy?
a. lessens water pollution
b. provides water for recreation
c. produces radioactive hazards
d. plants are inexpensive to build and operate
d. plants are inexpensive to build and operate
Which is not an advantage of using windmills to provide wind energy?
a. requires steady wind
b. does not cause pollution
c. is a renewable resource
d. requires little maintenance
a. requires steady wind
Water stored beneath the surface of the earth is called ____.
ground water
formed when the remains of plants and animals are buried quickly
fossil fuel
factory that separates crude oil into different products
refinery
mineral used to produce nuclear energy
uranium
concentrated area of specified mineral
vein
solid substance found naturally in the earth’s surface
mineral
layer of sand, gravel, or bedrock that holds and moves ground water
aquifer
floating ice sheet
ice shelf
forms when sea water freezes
sea ice
water returns to the sky through _____ and evaporation
transpiration
What are all the materials available on Earth for man’s use called?
natural resources
What are some advantages and disadvantages of nuclear energy?
Nuclear power is efficient and clean but can be dangerous if not carefully controlled. Radiation can escape from a nuclear plant and cause pollution and health problems. Used fuel needs special storage to keep it from harming the environment.
What are some ways that the oceans provide for man?
The oceans provide fresh water through the water cycle, play a key role in the carbon dioxide-oxygen cycle, provide oxygen by photosynthesis of phytoplankton, and influence climates.
Explain 3 things you can do to help conserve natural resources
- Reduce the amount of energy used.
- Reuse materials that would otherwise be thrown away.
- Recycle those resources that can be made into other products.
True or False
A nonrenewable resource can be replaced by natural means in a relatively short period of time.
False
True or False
Malleable metals are able to be dented or shaped.
True
True or False
Aluminum is the most abundant metal in the earth’s crust.
True
True or False
All of the Earth’s water is referred to as the biosphere.
False
True or False
Geothermal energy uses steam to turn turbines to produce electricity.
True
True or False
Hydroelectric energy uses windmills to control the flow of water.
False
