Geosphere
Hydrosphere
Biosphere 1
Biosphere 2
Earth's resources
100

The materials on Earth that are available for our use.

What are natural resources?

100

The path water takes as it traves from land to sky and back to land.

What is the water cycle?

100

This is a complete living thing.

What is an organism?

100

This is a tiny structure inside cells with a nucleus that helps carry out the functions of the cell.

What is an organelle?

100

Natural resources that cannot be replaced easily or quickly.

What is a nonrenewable resource?

200

Geothermal energy uses heat from the earth to produce steam.

How does geothermal energy work?

200

All of Earth's water found in lakes, oceans, streams, rivers, soil, underground, and in the air is referred to as the ___________.

What is the hydrosphere?

200

This instrument uses lenses to magnify objects hundreds or thousands of times.

What does a microscope do?

200

This provides the external boundary for the material inside the cell. This also keeps bad things out and allows necessary things in.

What is the cell membrane?

200

_______ ___ is used to produce heat and light.

What is natural gas used for?

300

______ ______ are formed when the remains of plants and animals are buried quickly.

How are fossil fuels formed?

300

Chlorophyll absorbs energy from sunlight to use in photosynthesis.

What does chlorophyll do for the plant cell?

300

Growth and development, reproduction, responding to environment, using energy, and being made of cells are these.

What are the five characteristics of living things?

300

A resource that can be replaced by natural means in a relatively short amount of time.

What is a renewable resource?

400

Dams are built across reservoirs and ____________ ______ can be produced as water flows from the reservoirs and turns turbines.

How is hydroelectric energy produced?

400

The kingdoms of Fungi, Plantae, and Animalia can all be this.

Which of the six kingdoms of life can be multicellular?

400

Eubacteria, Archaebacteria, Protista, and Fungi can all be this.

Which of the six kingdoms of life can be unicellular?

400

Rotating crops, letting fields lie fallow, using artificial fertilizers, using natural fertilizers, using ground cover, and contour plowing are all this.

What are six ways to conserve soil?

500

Mitosis is a step-by-step process that ensures that the two new cells will be the same as the original, or parent cell.

What is the purpose of the process of mitosis?

500

Meiosis ensures that the final four daughter cells have only half of the DNA as the parent cell.

What is the purpose of meiosis?