Space

Question 1

How does the earth travel around the sun?

Answer 1

In an elliptical revolution

Question 2

What is a satellite?

Answer 2

Any object that orbits a planet. Moon is natural satellite

Question 3

Solar eclipse?

Answer 3

Sun moon earth

Question 4

Lunar eclipse?

Answer 4

Sun earth moon

Question 5

Star

Answer 5

Body if electrically charged gas or plasma that emits energy from nuclear reactions from core

Question 6

Sunspot

Answer 6

Region of the surface of sun that’s cooler than surrounding areas indicating a strong magnetic field, slowing down convection

Question 7

Solar prominences

Answer 7

Large, low energy, curved, bright stream of particles that form a loop shaped by sun’s magnetic field

Question 8

Solar flare

Answer 8

High energy massive explosion at the surface of the sun. Sudden release of magnetic energy flings hot plasma into space

Question 9

Solar wind

Answer 9

Tremendous amount of energy at the sun’s surface produces a constant flow of particles streaming out of its surface in all directions.

Question 10

Aurora borealis

Answer 10

Natural light displace in the sky. Formed by solar wind particles getting trapped in the earth’s magnetic field and swept towards the poles

Question 11

Solar system

Answer 11

A star and all of the other celestial objects held by sun’s gravity and orbit around it

Question 12

Nebula

Answer 12

Cloud of dust and gases in space that is essential for star formation

Question 13

Nebular theory

Answer 13

After sun forms, solar wind blows against nebula from which it formed, pushing gas and dust away from sun.
Leftover gas continues to spin, creating thin disk around new star
Small bodies begin to form in the disk, forming planets, moons, asteroids

Question 14

Planet

Answer 14

Astronomical body that orbits one or more stars and is capable of forming into spherical shape with its own gravitational force

Question 15

Rocky inner planets

Answer 15

Mercury venus earth mars

Question 16

Gas giant planet

Answer 16

Jupiter saturn uranus neptune

Question 17

Asteroid belt

Answer 17

Huge band of billions of asteroids

Question 18

Dwarf planet

Answer 18

Have a spherical shape but have an unusual object

Question 19

Comet

Answer 19

Celestial object which travels around the sun in an elliptical orbit made up of dust and ice

Question 20

Meteor and meteorite

Answer 20

Meteor is a meteoroid that collides with gas molecules in earth’s atmosphere and heats up to very high temperatures. If it strikes earth then it’s a meteroid

Question 21

Galaxy

Answer 21

Collection of hundreds of billions of stars held together by gravitational forces

Question 22

Galaxy classifications

Answer 22

Size/mass
Colour
Luminosity
Surface temp

Question 23

Low mass star

Answer 23

White dwarf to black dwarf

Question 24

Medium mass star

Answer 24

Red giant to white dwarf to black dwarf

Question 25

High mass star

Answer 25

Supergiant to supernova to neutron or black hole

Question 26

White dwarf

Answer 26

Star (earth size) that has undergone gravitational collapse. Begins hot and white ends black and cold (black dwarf)

Question 27

Neutron star

Answer 27

One ending phase of star. Compression and collapse of star forms neutrons (very dense). 10-40 x mass of sun

Question 28

Black hole

Answer 28

One ending phase of high mass star. Region of space where gravitational forces are so strong that nothing can stop its collapse. 40 x greater than sun

Question 29

Universe

Answer 29

All existing matter and space considered as a whole

Question 30

Thermonuclear fusion

Answer 30

Atoms heat up to high temperatures and start fusing