Chapter 20 ; )

Question 1

Geocentric

Answer 1

A model of the universe in which Earth is at the center.

Question 2

Helenocentric

Answer 2

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

Question 3

Ellipse

Answer 3

An oval shape, which may be elongated, of nearly circular.

Question 4

Sunspot

Answer 4

A dark area of gas on the sun’s surface that is cooler that surrounding gasses

Question 5

Solar flare

Answer 5

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

Question 6

PROMINENCE

Answer 6

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

Question 7

Core

Answer 7

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

Question 8

Nuclear fusion

Answer 8

The splitting of an atom’s nucleus into two smaller nuceli and newtrons.

Question 9

Radiation Zone

Answer 9

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

Question 10

Convection Zone

Question 11

Photosphere

Answer 11

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

Question 12

Chromosphere

Answer 12

The middle layer of the sun’s atmosphere

Question 13

Corona

Answer 13

The outer layer of the sun’s atmosphere

Question 14

Solar wind

Answer 14

A stream of electricaly charged particles emanates from the sun’s corona

Question 15

Core

Answer 15

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

Question 16

Nuclear fusion

Answer 16

The splitting of atom’s nucleus into two smaller nuclei and atoms

Question 17

Radiation zone

Answer 17

A region of very tightly packed gas in the suns interior where energy is transfered mainly in the form of light.

Question 18

Convection Zone