science 7th vocab

Question 1

Radiation

Answer 1

The transfer of energy that is carried in rays like light.

Question 2

Conduction

Answer 2

Heat transfer between materials that are touching.

Question 3

Convection

Answer 3

Heat transfer by the movement of a fluid.

Question 4

Density

Answer 4

A measure of how much mass there is in a given volume of a substance.

Question 5

Convection Current

Answer 5

The flow that transfers heat within a fluid.

Question 6

System

Answer 6

A group of parts that work together as a whole.

Question 7

Energy

Answer 7

The ability to do work.

Question 8

Atmosphere

Answer 8

Relatively thin envelope of gases that forms Earth’s outermost layer.

Question 9

Geosphere

Answer 9

Has three main parts: a metal core, a solid middle layer, and a rocky outer layer.

Question 10

Hydrosphere

Answer 10

Contains all of Earth’s water.

Question 11

Biosphere

Answer 11

The parts of Earth that contain living organisms.

Question 12

Constructive Force

Answer 12

Shapes the land’s surface by building up mountains and other landmasses.

Question 13

Destructive Force

Answer 13

Destroy and wear away landmasses through processes like erosion and weathering.

Question 14

Seismic Waves

Answer 14

Occurs when earthquakes occur.

Question 15

Pressure

Answer 15

Force pressing on an area.

Question 16

Crust

Answer 16

The layer of rock that forms Earth’s outer skin.

Question 17

Basalt

Answer 17

Dark, fine-grained rock

Question 18

Granite

Answer 18

A rock that is usually a light color and has coarse grains.

Question 19

Mantle

Answer 19

A layer of hot rock.

Question 20

Lithosphere

Answer 20

The crust and uppermost mantle.

Question 21

Asthenosphere

Answer 21

The upper layer of the Earth’s mantle.

Question 22

Outer Core

Answer 22

A layer of molten metal surrounding the inner core.

Question 23

Inner Core

Answer 23

A dense ball of solid metal.

Question 24

Force

Answer 24

A natural power that acts on an object.

Question 25

Gravity

Answer 25

The force that makes objects fall toward Earth’s center.

Question 26

Particle

Answer 26

A very small fragment of a much larger object.

Question 27

Water evaporates from the ocean, rises into the atmosphere, and then falls from the sky as rain.

Answer 27

Water Cycle

Question 28

Magma

Answer 28

Molten, or lava that will come out of volcanoes and harden on the ground and turn to rock.

Question 29

Sediment

Answer 29

Particles that settle at the bottom of the ocean.

Question 30

Rock Cycle

Answer 30

The flow of rock through the Earth System.

Question 31

Feedback

Answer 31

Occurs when a system returns (feeds back) to itself data about a change in the system.

Question 32

Fossils

Answer 32

Remains of ocean animals such as ammonites.

Question 33

Plate Tectonics

Answer 33

The slow movement of Earth’s plates.

Question 34

Mesosphere

Answer 34

The result of increasingly high pressure.