Earth And Space

Question 1

Astronomy

Answer 1

The study of the universe and everything in it is called astronomy

Question 2

Geocentric

Answer 2

The theory of which everything orbits the Earth

Question 3

Heliocentric

Answer 3

The theory of which the planets orbit the Sun

Question 4

Universe

Answer 4

All existing matter and space as a whole

Question 5

Big Bang

Answer 5

The rapid expansion of matter from a state of extremely high density and temperature which according to current cosmological theories marked the origin of the universe.

Question 6

Galaxy

Answer 6

A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.

Question 7

Antimatter

Answer 7

Matter consisting of elementary particles which are the antiparticles of those making up normal matter.

Question 8

Hypothesis

Answer 8

Collection of ideas that seem to explain what is observed=>predictions that can be tested

Question 9

Models

Answer 9

Describes reality based on hypothesis that have withstood observational and experimental tests => explains with mathematics properties and behaviors of some object or phenomenon

Question 10

Theory

Answer 10

Series of well tested hypotheses that together form a self-consistent and accurate description of nature=> capable of making predictions that can be tested and verified by anyone

Question 11

Laws

Answer 11

Proven theories that have stood the test of time and have broad applicability

Question 12

Constellation

Answer 12

Some of these stars seem to be grouped forming images in the sky (88 groups)

Question 13

Ecliptic Plane

Answer 13

Plane of Earths orbit around the sun(not a circle)

Question 14

Asteroid

Answer 14

A lump of rock orbiting the Sun.
To small to be classified as a planet.
Thought to be left over from the time of the formation of the Universe.
The asteroid belt lies between the orbits of Mars and Jupiter.

Question 15

Celestial body

Answer 15

a celestial body is any natural body outside of the Earth’s atmosphere.

Question 16

Planet

Answer 16

a celestial body moving in an elliptical orbit round a star.

Question 17

Moon

Answer 17

the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.

Question 18

Star

Answer 18

a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.

Question 19

Sun

Answer 19

the star round which the earth orbits.

Question 20

Light year

Answer 20

a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 million million miles).

Question 21

Comet

Answer 21

a celestial body that travels around the sun, usually in a highly elliptical orbit: thought to consist of a solid frozen nucleus part of which vaporizes on approaching the sun to form a gaseous luminous coma and a long luminous tail.

Question 22

Terrestrial planets

Answer 22

on or relating to the earth.

Question 23

Gas Giants

Answer 23

a large planet of relatively low density consisting predominantly of hydrogen and helium, such as Jupiter, Saturn, Uranus, or Neptune.

Question 24

Gravity

Answer 24

the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.

Question 25

Force Field

Answer 25

(chiefly in science fiction) an invisible barrier of force.

Question 26

Solar System

Answer 26

the collection of eight planets and their moons in orbit round the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.

Question 27

Hypothesis

Answer 27

Collection of ideas that seem to explain what is observed=>predictions that can be tested

Question 28

Models

Answer 28

Describes reality based on hypothesis that have withstood observational and experimental tests => explains with mathematics properties and behaviors of some object or phenomenon

Question 29

Theory

Answer 29

Series of well tested hypotheses that together form a self-consistent and accurate description of nature=> capable of making predictions that can be tested and verified by anyone

Question 30

Laws

Answer 30

Proven theories that have stood the test of time and have broad applicability

Question 31

Constellation

Answer 31

Some of these stars seem to be grouped forming images in the sky (88 groups)

Question 32

Ecliptic Plane

Answer 32

Plane of Earths orbit around the sun(not a circle)

Question 33

Asteroid

Answer 33

A lump of rock orbiting the Sun.
To small to be classified as a planet.
Thought to be left over from the time of the formation of the Universe.
The asteroid belt lies between the orbits of Mars and Jupiter.

Question 34

Celestial body

Answer 34

a celestial body is any natural body outside of the Earth’s atmosphere.

Question 35

Planet

Answer 35

a celestial body moving in an elliptical orbit round a star.

Question 36

Moon

Answer 36

the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.

Question 37

Star

Answer 37

a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.

Question 38

Sun

Answer 38

the star round which the earth orbits.

Question 39

Light year

Answer 39

a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 million million miles).

Question 40

Comet

Answer 40

a celestial body that travels around the sun, usually in a highly elliptical orbit: thought to consist of a solid frozen nucleus part of which vaporizes on approaching the sun to form a gaseous luminous coma and a long luminous tail.

Question 41

Terrestrial planets

Answer 41

on or relating to the earth.

Question 42

Gas Giants

Answer 42

a large planet of relatively low density consisting predominantly of hydrogen and helium, such as Jupiter, Saturn, Uranus, or Neptune.

Question 43

Gravity

Answer 43

the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.

Question 44

Force Field

Answer 44

(chiefly in science fiction) an invisible barrier of force.

Question 45

Solar System

Answer 45

the collection of eight planets and their moons in orbit round the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.