Matter and Atoms
Chemical Reactions
Ecosystems and Interactions
Earth's Systems
Energy Resources
200

The subatomic particles in the nucleus of an atom

What is Protons and Neutrons?
200

The change of a substance's identity due to its particles being rearranged

What is Chemical Change?

200

The cumulative change of characteristics of a population over a period of time

What is Evolution?

200

The continuous movement of water on, above, and below the surface of the Earth

What is the Water Cycle?

200

The most common method of obtaining energy

What is Fossil Fuels?

400

The two groups that are highly reactive towards each other

What is Alkali Metals / Group 1 and Halogens / Group 17?

400

The signs such as change in temperature, color change, and making new solids or gasses

What is Evidence of a Chemical Reaction?

400

The place where a plant or animal lives in

What is Habitats?

400

The natural process in which carbon dioxide and water are converted into sugar

What is Photosynthesis?

400

The oldest form of energy used by humans; organic matter use from recently living organisms

What is Biomass Energy?

600

The simplest pure substance made up of only one type of atom

What is Elements?

600

The group that is most nonreactive due to having a full outer shell

What is Noble Gases / Group 18?

600

The struggle to gain a limited amount of resources in an ecosystem, in which two or more organisms try to access the same resource

What is Competition?

600

The interdependent cycle that either stores or releases carbon dioxide

What is the Carbon-Oxygen Cycle?

600

Resources that can be replaced more or as quickly as we use them

What is Renewable Energy Sources?
800

The process in which an atom becomes an ion

What is Ionization?

800

The mass of a new substance is equivalent to the mass of the reactants combined in order to create that new substance; matter cannot be created or destroyed

What is Law of Conservation of Mass?
800

The organism interaction in which one organism benefits and the other organism is harmed

What is Parasitism?

800

The area of land where water is drained downhill into a body of water

What is Watershed?

800

The splitting of atoms via fission for this type of energy

What is Nuclear Energy?

1000

The mixture that does not have the same properties throughout and often keeps its own separate identities and properties

What is Heterogeneous Mixtures?

1000

The outermost electron shell of an atom that plays a major part in chemical bonds

What is Valence Electron Shell?

1000

The tendency for favorable traits to be selected by nature over less favorable traits in an ecosystem

What is Natural Selection?

1000

The changing of water from a solid directly to a gas with no intermediate liquid stage

What is Sublimation?

1000

The inexhaustible resource that comes from the movement of air heated by the sun

What is Wind Energy?