Spheres of the Earth
Chemistry
Ecosystems
Methane
Patterns in Earth Science
100

The layer of the earth that includes living organisms

Biosphere

100

This names everything that takes up space and has mass.

Matter

100

The source of most energy on earth.

The sun.

100

Colorless, odorless gas that occurs abundantly in nature and as a product of certain human activities - a greenhouse gas that is more potent than carbon dioxide.

Methane.

100

A dark shape made when an object blocks light.

Shadow

200

All of the water on Earth.

Hydrosphere

200

Adding milk to your hot cocoa is an example of a  

_____________ system

Open system

200

Model made of intersecting food chains.

Food web.

200

Wetlands, landfills, cows, oceans, termites, fossil fuels are...

Sources of methane

200

Earth moves in a circle around the sun once every 365.25 days.

Orbit

300

78% of this sphere is nitrogen 

atmosphere

300

When energy is needed to run a chemical reaction and is taken from the surroundings the environment   cools down.  An example is mixing vinegar and baking soda.  What type of experiment is this?

Endothermic

300

Living things that break down dead and decaying organisms.

Decomposers.

300

An anaerobic organism does not need what element?


oxygen

300

When it is summer in the United States, it is what season in Australia.

Winter

400

All of the spheres

hydrosphere, biosphere, atmosphere, geosphere

400

When two or more different substances are mixed, and a new substance with different properties may be formed.

A chemical reaction.

400

Dead organic materials.

Detritus

400

These microorganisms feed on methane.

methanotrophs

400

This causes day and night.

Earth revolving on it's axis.

500

Name two of Earth's spheres that can be found to interact within the process of erosion.

Geosphere and hydrosphere, or biosphere, or atmosphere.

500

You can measure and identify a substance using these.

Physical properties.

500

Nutrients and living matter are passed from producers to consumers, then broken down by decomposers. Decomposers break down dead plant and animal matter.

Matter cycles through an ecosystem.

500

This ice consists of water molecules that are frozen around methane.

methane hydrates

500

The area of the shadow where only a portion of the Moon is in front of the Sun.



Penumbra

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