Science Astronomy

Front 1

Define Astronomy

Back 1

The scientific study of stars, planets, and other celestial objects

Front 2

Define rotation

Back 2

Rotation is the Earth spinning on an imaginary axis. It is spinning on an angle of 23.5. 1 rotation is 1 day.

Front 3

Define revolution

Back 3

One complete orbit around the sun

Front 4

Define Orbit

Back 4

Path a planet takes around a star, or a moon, or satellite takes around a planet.

Front 5

Define Axis

Back 5

The line connecting the north pole with the south pole. The earth rotates on its axis.

Front 6

Retrograde Motion

Back 6

The apparent loop-like motion of planets as seen from Earth.

Front 9

Define investigation

Back 9

Finding answers to questions by performing fair tests.

Front 10

Define Hypothesis

Back 10

Predictions about the result of an experiment/

Front 11

Define independent variable

Back 11

The variable that we change during an investigation.

Front 12

Define dependent variable

Back 12

The variable that we use to measure the result of the investigation.

Front 13

Define controlled variable

Back 13

The variables that have to be kept the same, in an investigation to make it a fair test.

Front 14

State the order of the planets in the solar system

Back 14

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

Front 15

Torrid

Back 15

Tropical zones near the equator, light from the sun shines directly on earth and heats ground.

Front 16

Describe difference between terrestrial and gas giant planets

Back 16

Terrestrial planets are rocky and hard. Gas giants are balls of gas with a small rocky core.

Front 17

Why is Pluto a dwarf planet now

Back 17

Pluto is a dwarf planet because it doesn't have enough gravity to clear away dust etc.

Front 18

Define Meteor

Back 18

A meteoroid that burns up in the Earth's atmosphere.

Front 19

Define Meteorite

Back 19

A meteoroid big enough to reach the surface of the Earth without burning up in the Earth's atmosphere.

Front 20

Define Geocentric Model

Back 20

The model that involved Earth being in the centre of the universe, and the Sun, moon, planets and stars revolved around it.

Front 21

Define Heliocentric Model

Back 21

The model that involved the sun being in the centre of the universe and the earth, moon, planets and stars revolved around it.

Front 22

Define Constellation

Back 22

A group of starts that forms a recognisable pattern in the sky.

Front 23

Define Planisphere

Back 23

A star map that will help you locate particular stars in the sky.

Front 24

Frigid

Back 24

Polar zones closer to the poles, where the sunlight hits the Earth and spreads over the area. these places are cooler.

Front 25

Temperate

Back 25

Temperate zones are in between frigid and torrid zones. Perth is a temperate zones.

Front 26

Sun

Back 26

Made of Hydrogen and Helium. Dark patches are sun spots, cooler areas of gas. Solar flares are hot spots. When the solar wind strikes, an aurora is formed.

Front 27

Mercury

Back 27

Little atmosphere, many crater from meteorite strikes, temperature = 400 degrees. no air.

Front 28

venus

Back 28

Evening star. Bright in sky because of sulphuric acid clouds. temperatures are 500 degrees. air pressure= 90 times of earths.

Front 29

Earth

Back 29

Presence fo liquid water allows life to exist.

Front 30

Moon

Back 30

no water or atmosphere exists, cratered.

Front 31

Mars

Back 31

Red colour, large volcano 3 times as tall as mt. everest.

Front 32

Jupiter

Back 32

Made of Hydrogen and Helium. over 50 moons, 1000 times of earth. red spot is tropical storm has been raging for 300 yrs.

Front 33

Saturn

Back 33

surrounded by rings made of ice and dust.

Front 34

Uranus

Back 34

4 rings and 15 moons.

Front 35

Neptune

Back 35

two moons, triton and Nereid.

Front 36

Comets

Back 36

Made of rock & ice. elliptical orbit around sun.