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WorksheetsOrbits and Stars
Total questions: 11
Worksheet time: 6mins
What force acting towards the centre leads to satellites travelling in a circular orbit?
Air Resistance
Centrifugal force
Gravity
The Sun
What changes during the orbit?
Speed
Velocity
Direction of motion
Force
What happens to a satellite which is in orbit too close to a planet?
It will stay at a constant height because gravity is still acting
It will move away from the planet
It will lose speed and crash
If a satellite is further from the planet, it will move slower to remain in orbit. True or false
TRUE
FALSE
Which is the word for a collection of dust and gas in space?
Nudula
Proto-star
Nebula
Main sequence star
What force pulls together dust and gas to form a protostar?
gravity
radiation pressure
fusion
centripetal force
Fusion of small elements leads to the formation of new elements in stars. True or false
TRUE
FALSE
All elements can be formed in a Main Sequence Star. True or false
TRUE
FALSE
Heavy elements can only be formed during a (a)
What is the fate of our Sun once it has no more hydrogen to fuse?
Red-Giant, White Dwarf
White Giant, Red Dwarf
Red Giant, Supernova
Red Giant, Black Hole
What is the name of a force which acts towards the centre of any circle?
Centre force
Centrifugal force
Gravity
Centripetal force
