Astronomy

Question 1

How long can light energy take to travel through the radiative zone and be emitted?

Answer 1

100,000

Question 2

Convective zone (3)

Answer 2

Plasma bubbles, currents

Question 3

Chromosphere (5)

Answer 3

Red, visible during eclipse

Question 4

What does a nebula contain?

Answer 4

Contains a force of gravity that causes gas particles to collapse

Question 5

What can the remains of a supernova form?

Answer 5

Neutron star or black hole

Question 6

What happens once all of the hydrogen is used up in a star?

Answer 6

The star will collapse

Question 7

Nuclear reaction

Answer 7

The squeezing of hydrogen atoms into helium atoms

Question 8

Mars contains…

Answer 8

Craters, canyons, and dry river beds

Question 9

Venus

Answer 9

-rotates east to west
-called the morning/evening star
-hottest and brightest planet
-thick atmosphere; Carbon dioxide

Question 10

Mercury

Answer 10

-smallest planet
-closest to the sun
-no moons
-thin atmosphere

Question 11

Mars

Answer 11

-2 moons; Phobos & Deimos
-very thin atmosphere of CO2 making it much cooler than earth
-polar ice caps made of frozen water and CO2

Question 12

Saturn

Answer 12

-second largest
-ring system made of ice and dust

Question 13

Neptune

Answer 13

-blue
-ring system

Question 14

Uranus

Answer 14

-3rd largest planet
-vertical rotation
-blue& white clouds due to methane

Question 15

Jupiter

Answer 15

-great red spot
-numerous moons; Io, Europa, Ganymede, & Calisto

Question 16

Where is the Asteroid Belt located?

Answer 16

Between the planets Mars and Jupiter

Question 17

Meteoroid

Answer 17

Lump of rock/metal pulled down by earths gravity

Question 18

Meteor

Answer 18

Piece of rock in the atmosphere that glows white hot, also called a shooting star

Question 19

Meteorite

Answer 19

Remains of a meteor after impact

Question 20

Origin of the solar system (5 marks)

Answer 20

-started out as a nebula (h/he)
-gravity pulls the nebula together to create the sun
-clumps from the nebula form the planets surrounded by a gaseous layer
-when the sun ignites, the outer layer of gas evaporates from the 4 terrestrial planets
-outer gas giants keep their gaseous atmosphere

Question 21

What happened after the Big Bang?

Answer 21

The universe coded and allowed the formation of subatomic particles and simple atoms

Question 22

How are an astronomical unit and a light year similar in terms of what they measure? Which is the longer distance?

Answer 22

They both are used to measure distance in space, light year is the longer distance.

Question 23

Layers of the sun in order

Answer 23

Core, radiative zone, convective zone, photosphere, chromosphere, corona

Question 24

Core (1)

Answer 24

15 million degrees Celsius

Question 25

Radiative zone (2)

Answer 25

Dense plasma

Question 26

Photosphere (4)

Answer 26

Yellow, 5500 degrees Celsius

Question 27

Corona (6)

Answer 27

Produces solar winds

Question 28

What influences both the formation of the Aurora’s and comets?

Answer 28

Solar wind

Question 29

What is the type of reaction that powers the sun?

Answer 29

Nuclear fusion