NC 6th Grade Science Review

The strengthening of a sound wave when it combines with an objects natural vibration.

A think outer layer of rock above a planet's mantle, including ocean basins and dry land.

A material that does not transfer energy easily.

A model used to show a feeding relationship in which many food chains overlap in an ecosystem.

A substance that cannot be broken down into a simpler substance by ordinary chemical changes.

Inherited trait that makes a species able to survive and reproduce in a particular environment.

The tendency of a substance to undergo chemical changes.

Any type of matter or energy from Earth's environment that humans use to meet their needs.

Igneous rock that forms as magma cools below Earth's surface.

A process in which the shaking of ground causes loose, wet soil to act as a liquid.

The number of waves that pass a fixed point in a given amount of time.

Ability for a given substance (solute) to dissolve in another substance (solvent).

A relationship between two species where one benefits and the other is harmed.

The property of a mineral that describes the way in which light reflects from its surface.

In an earthquake, the point underground where the rocks first begin to move.

The layer of Earth made up of the crust and the rigid rock of upper mantle.

Molten rock beneath Earth's surface.

The amount of heat per unit of mass required to raise the temperature by one degree Celsius.

The number and variety of living things found on Earth or within an ecosystem.

The outer layer of the Sun's atmosphere.

A fracture in Earth's lithosphere along which blocks of rock move past each other.

Deposits of fine-grained, wind-blown sediment.

The release of harmful substances into the air, water, or land.

The strengthening of an electrical signal, used to increase the intensity of a sound wave.

A boundary along which two plates carrying continental crust push past each other.

The process of saving or protecting a natural resource.

CO₂ + H₂O + energy → O₂ + Glucose

The amount of matter in an object.

An area where a column of hot material rises from within a planet's mantle (volcanic activity).

The amount of energy of a wave, per wavelength. Associated with the amplitude and loudness.

A tool that uses refraction to separate different wavelengths of light.

The amount of space a substance or object occupies.

Cloud of gasses and rock fragments that moves quickly from an erupting volcano.

A tentative explanation for an observation or phenomenon; used to make testable predictions.

A measure of the number of organisms that live in a given area.

The process by which an oceanic tectonic plate sinks under another plate into Earth's mantle.

The temperature at which a liquid boils and turns to vapor.

A property of matter representing the mass per unit volume.

A boundary along which two tectonics plates move apart.

A solid sphere of metal; mainly nickel and iron, at Earth's center.

The breakdown of rock that takes place when minerals change through chemical processes.

A living thing in an ecosystem.

A hypothetical super continent that included all of the landmasses on Earth.

The expansion of desert conditions in areas where natural plant cover has been destroyed.

The layer of rock that is hot enough to flow in convection currents; Earth's thickest layer.

Instruments that use echolocation to locate objects underwater.

The system used in science for measuring physical qualities.

The dark central region of a shadow.

The spreading out of light rays in all directions as particles reflect and absorb light.

The decaying organic matter in soil.

The amount of heat in a substance or object.

The smallest particle of an element that has the chemical properties of that element.

A circulation pattern in which material flowing is heated and rises, then cools and sinks.

Soil composed mostly of sand, silt, and a smaller amount of clay.

The scientific study of sound.

Energy is transferred from a warmer object to a cooler object by physical contact.

A layer of molten metal, mainly nickel and iron, that surround Earth's inner core.

An area of land at the end, or mouth, of a river that is formed by the buildup of sediment.

A change in the observed frequency of a wave, the source of the wave or the observer is moving.

An organism that feeds on and breaks down dead plant or animal matter.

A force exerted on a mass by gravity.

A space containing few or no particles of matter.

The breakdown of rock into smaller pieces of the same material without change to composition.

Interaction between to species in which both benefit, type of symbiosis.

A region of Earth with a specific climate and certain types of plants.