Space

Question 1

What is a planet?

Answer 1

A planet orbits a star

Question 2

What is a dwarf planet?

Answer 2

A dwarf planet orbits a star, but is not large enough or roughly spherical enough to be classified as a small planet

Question 3

What is a moon?

Answer 3

A moon orbits a planet

Question 4

What is a star?

Answer 4

A star is a ball of hot matter which gives out light and other forms of electromagnetic radiation.
It does not burn- nuclear fusion reactions are taking place

Question 5

What are asteroids?

Answer 5

Asteroids are lumps of rock orbiting a star which are smaller than dwarf planets

Question 6

What is a solar system?

Answer 6

A solar system is the planets, moons and asteroids which orbit a star

Question 7

What is an exoplanet?

Answer 7

An exoplanet is a planet which orbits a star which is not our Sun

Question 8

What is a galaxy?

Answer 8

A galaxy is an enormous group of stars, some of which may have planets orbiting them

Question 9

What is the universe?

Answer 9

The universe is everything that exists- many galaxies separate by empty space

Question 10

How did the universe start?

Answer 10

The Big Bang

Question 11

What is the Big Bang?

Answer 11

A rapid expansion from a point which was infinitely dense

Question 12

How old is the universe?

Answer 12

It is approximately 13.8 billion years old

Question 13

True or False: the universe is not expanding

Answer 13

False- the universe is still expanding

Question 14

After the Big Bang, how where atoms formed?

Answer 14

As it expanded the universe began to cool down, energy changed into particles of matter. Particles combined to form atoms

Question 15

What are the basic needs for human life?

Answer 15

Oxygen, water, food, shelter, warmth

Question 16

What is a satellite?

Answer 16

A satellite is an object which orbits a planet

Question 17

What is the period of a satellite?

Answer 17

The period of a satellite is the time it takes to make one complete orbit

Question 18

True or false: the higher the satellite orbit the shorter it takes for one complete orbit

Answer 18

False-The higher the satellite orbit the longer it takes for one complete orbit

Question 19

What is a geostationary satellite?

Answer 19

A satellite which appears to stay in the same place, relative to earth, is called a geostationary satellite

Question 20

What is the period of a geostationary satellite?

Answer 20

The period of a geostationary satellite is 24 hours

Question 21

How do satellites work?

Answer 21

Newton thought that if it where possible to fire an object from a very large cannon with enough velocity it would fall towards earth at the same rate as the earth falls away. The object will orbit earth. This is how satellites work.

Question 22

What are the uses of satellites?

Answer 22

Global Positioning satellites (GPS)
Weather forecasting
Communications
Space discovery and space exploration

Question 23

What is Global Positioning Satellites (GPS)?

Answer 23

The signal from three or more satellites is used to find your location accurately

Question 24

How is GPS useful?

Answer 24

This is useful when Navigating your way around somewhere you are not familiar with (sat-nav in car) or when trying to find a ship in trouble at sea

Question 25

What is weather forecasting?

Answer 25

Satellites can help predict the weather, providing warnings of extreme conditions. They can also be used to track forest fires and monitor areas where the conditions make it likely that forest fires could break out

Question 26

What is communications?

Answer 26

Satellites are used to send radio and television signals around the world. This allowed people to keep in touch with what is happening in real time

Question 27

What are examples of space discovery and space exploration?

Answer 27

E.g. Hubble telescope and International Space Station (ISS)

Question 28

Pg 10