• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/9

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

9 Cards in this Set

  • Front
  • Back

materials in the environment that are useful to people

natural resources

fuels made from organic matter

biofuels

the practice of decreasing the use of natural resources in order to save them

conservation

electricity made from the energy of moving water in a dam

hydroelectric power

heat energy naturally produced within Earth

geothermal energy

sources of energy that do not come from fossil fuels

alternative energy sources

natural resources, such as fossil fuels, that will eventually be used up and can never be replaced

nonrenewable resources

natural resources that nature can produce again, such as trees, plants, animals, water, oxygen, and soil

renewable resources

fuels formed from the decaying remains of plants and animals that lived millions of years ago

fossil fuels