Space And Beyond

Question 1

How fast is the speed of light

Answer 1

Around 300,000 kilometres per second

Question 2

How long does it take the speed of light to reach the sun from earth

Answer 2

500 seconds

Question 3

How long does it take the speed of light to reach the nearest other star

Answer 3

4 years

Question 4

How long does it take the speed of light to reach the virgo cluster

Answer 4

40 milion years

Question 5

How are stars made

Answer 5

New stars form from the gas and dust in galaxies. This is pulled together by gravity. Enough material is pulled together and starts to get hot and shine. A new star is born, the star makes the gas around glow

Question 6

Why do stars shine

Answer 6

Nuclear fusion of hudrogen gas and helium gas makes it shine

Question 7

Where might have life existed on mars in the past

Answer 7

If there was water on the surface or underground

Question 8

Might life be on mars today

Answer 8

Microorganisms but no form of life

Question 9

What evidence shows that there may be life on a planet

Answer 9

Living things normally change the atmosphere around them. The Earth’s atmosphere, for example, contains far more oxygen than ti would fi there were no living organisms.

Question 10

Why do scientists believe there might be life on europa

Answer 10

Lots of ice that could of been water

Question 11

How can lif ebe dected througn ice

Answer 11

Heat detectors

Question 12

Why do scientists think theres prob life

Answer 12

Theres so many planets

Question 13

Why will we never no if theres life

Answer 13

Unless they are developed, we will never be able to realise

Question 14

What are reflecting telescopes

Answer 14

Uses light to refract and focus the light. They used curved mirrors to form an image which is then magnified by a second mirror

Question 15

Whata re reflecting telescopes

Answer 15

Uses curved mirrors to reflect and focus light

Question 16

What are the components of a telescope

Answer 16

Obkective lense
Eyepiece lense

Question 17

Dissadvantages of a refracting telescope

Answer 17

The light reflects of the lense so the image is very faint

Large lenses need to improve magnification

Question 18

Dissadvantages of a refracting telescope

Answer 18

The light reflects of the lense so the image is very faint

Large lenses need to improve magnification

Light weight and portable

Hardly needs maintancence

Question 19

One benifit of soace program

Answer 19

U derstanding space and science itself

Question 20

Hazards of space travel

Answer 20

• Polution from rocket launches (global warming)
• Very expensive (374 milion a year)
• Dangerous (space junk, solar flares, asteroid feilds
• radiation (risk to astronaughts and toox material)
• parachute malfunction - any reasources or data collected lost
• combustion of space craft re entering the earth

Question 21

What are solar flares

Answer 21

Radiation from the sun thrown out from the suns surface causing radiomagnetic disturbances on earth

Question 22

What is required for a reaction to occur,

Answer 22

Must have sufficient energy, correct orientation amd shot at the right angle

Question 23

How does pressure effect the rate of reaction

Answer 23

It decreases the volume which increases the concentration

Question 24

What is matter

Answer 24

matter is any substance that has mass and takes up space by having volume.

Question 25

Whats dark matter

Answer 25

Invisible matter that dosent react with electromagnetic forces

Question 26

Whats wind energy

Answer 26

Force of wind turns turbines to spin which transforms kinetic energy into electric energy

Question 27

Whats tidal power energy

Answer 27

High tide is trapped and released as a low tide, when released it turns turbines which make energy

Question 28

How does solar work

Answer 28

Energy from the sun heats pannels and made into electricity cells

Question 29

How to operate a coal fired power station

Answer 29

Coal burnt makes steam drives turbines into electricity. Steam is condensated again

Question 30

How do bipfeusl work

Answer 30

Chemical energy once stored in alive things like animals amd plants are transferred into thermal energy through being burnt making steam

Question 31

Nuclear energy

Answer 31

Atoms in radioactive feuls split into 2 causing a chain reaction, when they split it creates energy boiling water

Question 32

Geothermal energy

Answer 32

Natural heat from rocks underground boils water thats being fed through pumps turning into steam

Question 33

What would outerspace sognals be like

Answer 33

Irregular and repetative

Question 34

How are stats made

Answer 34

Thinly spread out matter is pulled together by gravity This spread out as it was mainly hydrogen and helium Like the sun, hygrogen and heliem form otgetjer. This is called nuclear fission.

Question 35

Whats hydroelectric power

Answer 35

Rainwater ina. Resovoir flows downhill and drives turbines

Question 36

Whats hydroelectric power

Answer 36

Rainwater ina. Resovoir flows downhill and drives turbines

Question 37

Wave power

Answer 37

Floating generators move up and down, motion turns the generator so it makes electrocity. Its passed to land through shoreline delivers

Question 38

How was the solar system maxe

Answer 38

Formation. Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula – a spinning, swirling disk of material.

Question 39

Differences betweent he 3 galaxies

Answer 39

Spiral galaxies have a central large bulge with a flattened surrounding disk with spiral arms. Elliptical galaxies have semi-spherical or elliptical shapes. And irregular galaxies lack structure and organized shape.

Question 40

Whats redshift

Answer 40

In physics, a redshift is an increase in the wavelength of light from a distant star moving away from earth

Question 41

Whats cmbr

Answer 41

smic microwave background (CMB) is leftover radiation from the Big Bang or the time when the universe began

Question 42

What is dikute

Answer 42

More concentrated

Question 43

What does it mean if its more concentrated

Answer 43

greater concentration oer unit volume (acid) Therefore more collisions per unit time

Question 44

What can give accuracy when measuring liquids or gases

Answer 44

burette functions as a tool for measuring both liquids and gases with high accuracy and can be used in replacment as a measuring cylinder

Question 45

What does concentration effect

Answer 45

greater concentration oer unit volume (acid) Therefore more collisions per unit time

Question 46

What can decrees surface area

Answer 46

pestle and mortar