Observing The Soar System Grade6

Question 1

Heliocentric

Answer 1

A model of the solar system in which Earth and the other planets revolve around the sun.

Question 2

Ellipse

Answer 2

An oval shape, which may be elongated or nearly circular; the shape of the planets’ orbit.

Question 3

Core

Answer 3

The central region of the sun, where nuclear fusion takes place.

Question 4

Nuclear fusion

Answer 4

The process by which a hydrogen atoms join together in the sun’s core to form helium.

Question 5

Radiation Zone

Answer 5

A region of very tightly packed gas in the sun’s interior where energy is transferred mainly in the form of light.

Question 6

Convection Zone

Answer 6

The outermost layer of the sun’s interior.

Question 7

Photosphere

Answer 7

The inner layer off the sun’s atmosphere that gives of visible light.

Question 8

Chromosphere

Answer 8

The middle layer of the sun’s atmosphere.

Question 9

Corona

Answer 9

The outer layer of the sun’s atmosphere.

Question 10

Solar wind

Answer 10

A stream of electrically charged particles that emanate from the sun’s corona.

Question 11

Sun spot

Answer 11

A dark area of gas on the sun’s surface that is cooler than surrounding gases.

Question 12

Prominence

Answer 12

A huge, reddish loop of gas that protrudes from the sun’s surface, linking parts of sunspot regions.

Question 13

Solar flare

Answer 13

An eruption of gas from the sun’s surface that occurs when the loops in sunspot regions suddenly connect.

Question 14

Geocentric

Answer 14

A model of the universe in which earth is at the center of the revolving planets and stars.