Circular Orbits (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What causes orbits to occur?
What causes orbits to occur?
The force of gravity
What path do planets follow around the sun?
What path do planets follow around the sun?
Almost circular orbits
Which of these orbit planets in almost circular paths?
Which of these orbit planets in almost circular paths?
Moons and artificial satellites
Why does an object's velocity change in a circular orbit even at constant speed?
Why does an object's velocity change in a circular orbit even at constant speed?
Direction is changing
What would happen to a planet without the force of gravity?
What would happen to a planet without the force of gravity?
It would fly off into space
Why do planets continue at constant speed in their orbits?
Why do planets continue at constant speed in their orbits?
No friction or air resistance in space
What combination creates a circular orbital path?
What combination creates a circular orbital path?
Momentum and force of gravity
How does gravitational force change as you get closer to a star or planet?
How does gravitational force change as you get closer to a star or planet?
It becomes stronger
If gravitational force is stronger, how must the orbiting object travel?
If gravitational force is stronger, how must the orbiting object travel?
Faster to remain in orbit
What happens to the radius of an orbit if the object's speed changes?
What happens to the radius of an orbit if the object's speed changes?
The radius also changes
How does the speed of an orbiting object relate to its orbital radius?
How does the speed of an orbiting object relate to its orbital radius?
Faster object, smaller radius
What attracts a planet towards the sun?
What attracts a planet towards the sun?
The force of gravity