astronomy

Question 1

what is the solar system made up of

Answer 1

planets,dwarf planets,natural,satelitles,artificial satellites,asteroids and comets

Question 2

planets

Answer 2

large objects which orbit stars.there are 8 of them orbiting the sun.they must be large enough to have cleared their neighbourhood

Question 3

dwarf planets

Answer 3

planets like objects that orbit stars but are too small to meet all the requirements to be classified as a planet

Question 4

natural satelite

Answer 4

natural objects that orbit a planet

Question 5

artificial satilite

Answer 5

satellites that humans have built

Question 6

astroid

Answer 6

lumps of rock and metals that orbit the sun. often located in a belt between Mars and Jupiter

Question 7

comet

Answer 7

lumps of ice and dust that orbit the sun

Question 8

what is the order of the planets

Answer 8

mercuary ,venus ,earth,mars,jupiter,saturn,uranus and neptune - my very excited mum just served us noodles

Question 9

elliptical

Answer 9

squashed oval

Question 10

what things can we use to observe the universe

Answer 10

land telescope ,satellite telescope ,rover,photograph,computer analysis and simulations, eyes and lander

Question 11

where should we put a land telescope

Answer 11

on a hill

Question 12

advantages of a landbased telescope

Answer 12

• it can updated easily if new tec is invented
• easy to repair
• you can make the telescope it big to detect faint object

Question 13

disavantage of landbased teloscope

Answer 13

• can only ever see half the sky

Question 14

advantages of a satillite teloscope

Answer 14

can see any part the sky when its pointed in that direction
can detect wavelength of em radiation that would be absorbed by the atmosphere
produces clearer images because the atmosphere doesn’t effect the image quality because there is no atmosphere on space to be effecting it but on land there is

Question 15

disadvantages of satillate telosopce

Answer 15

has to be made as small and light as possible because they have to transport it to space
very expensive to repair and might not be able to repair it

Question 16

why is the weight of an object different on each planet

Answer 16

the greater the mass of the object the bigger the objects weight will be

Question 17

how and why does the weight of any body differ between the surface of planets

Answer 17

the weight of an object is the force of gravity acting on its mass.It can be calculated using the equation w = mxg .an objects mass does not change but its. weight depends on the strength of the gravitational field of the planet

Question 18

how and why does the gravity of any body difference between the surface of planets

Answer 18

the gravitational field strength on the surface of a body such as a planet or moon depends on the mass and radius of the body. the greater the mass and the smaller its radius, the greater its surface gravity

Question 19

which bodies have almost circular orbits

Answer 19

planets

Question 20

which bodies have highly eliptical orbuts

Answer 20

comets and dwarf planets

Question 21

describe earths speed

Answer 21

the earths speed is always constant

Question 22

describe earth velocity

Answer 22

the velocity would always be changing becuase it is a vector and has a magnitude and a direction, the direction is always changing causing the acceleration to always be changing

Question 23

describe earth acceler\tion

Answer 23

acceleration would always be changing because it is a vector and has a magnitude and a direction, the direction is always changing causing the acceleration

Question 24

how does distance affect velocity?

Question 25

hiw does distance affect gravitatio m

Answer 25

the greater the distance the smaller gravitational force acting on an object in orbit

Question 26

common features of stars

Answer 26

• spherical
  -hot
• Bright emits uv
  -large gravitational fields
• they don’t orbit

Question 27

difference of stars

Answer 27

• different matriels
• colours
• sizes
  -masses
• temperatures

Question 28

what keeps the sun in orbit

Answer 28

gravity from the sun creates a centripetal force on the planet because it works with the velocity of the planet which goes a right angle to the centripetal force

Question 29

what is the effect of gravity when a planet Is closer to the sun

Answer 29

if a planet is close to the sun the gravity acting on the planet from the sun is stronger.

Question 30

why does the velocity of the planet have to be strong

Answer 30

the velocity of the planet has to be strong enough to balance out the gravitational pull from the sun to make sure the planet isn’t pulled in the direction of the sun

Question 31

how many dwarf planets are there

Answer 31

5

Question 32

how many comets

Answer 32

thousand

Question 33

how many asteriods

Answer 33

millions