space

Question 1

what is a natural and artificial satellite

Answer 1

the moon is a natural satellite
artificial satellite man made they generally orbit the Earth

Question 2

what are dwarf planet

Answer 2

planet like objects that orbit stars

Question 3

what way do plants move around the sun

Answer 3

plants moves around the sun in a circular orbit

Question 4

what is constant acceleration

Answer 4

if an object is travelling in a circle it is constantly changing direction

Question 5

if an object is constantly accelerating what else it is doing

Answer 5

constantly changing velocity

Question 6

what must there be for an object to accelerate

Answer 6

there must be a force acting on it. This force is directed towards the centre of the circle

Question 7

what causes the orbit to change direction

Answer 7

the force would change the object to just fall forwards whatever it was orbiting but as the object is already moving it changes direction

Question 8

what keeps the orbit travelling in a circle

Answer 8

the object keeps accelerating towards what it is orbiting but the instantaneous velocity ( which is at right angles to the acceleration) which keeps it travelling in a circle

Question 9

what force makes an orbit circular

Answer 9

force provided by the gravitational force between the planet and the Sun or planet and satellite

Question 10

how is the gravitational force stronger

Answer 10

the closer you are to the star or planet

Question 11

what happens the stronger the force

Answer 11

the stronger the force the faster the orbiting object needs to travel to remain in orbit

Question 12

what happens when a stable orbit changes speed

Answer 12

if the speed of the object changes the size of its orbit must do so too. Faster moving objects will move in a stable orbit with a smaller with a smaller radius than than slower moving ones

Question 13

what is red shift