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HSC Physics | Space

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Quiz by asensio10
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Last updated: October 28, 2017
First submittedOctober 28, 2017
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Hint
Answer
Amount of matter in an object
Mass
Energy Stored to it's position in a gravitational field
Gravitational Potential Energy
Once it is launched, only force that acts on it is acceleration due to gravity
Projectile
Force Experienced due to gravitational acceleration
G Force
Type of orbit if satellite has period of <24 hours
Low Earth
Time Taken for Satellite to complete one orbit
Period
What Satellite experiences when it makes friction with atmosphere
Orbital Decay
Effect utilised by probes using a planet's gravity to speed up or slow down
Slingshot Effect
Hint
Answer
Phenomenon that supposedly allowed light to be transmitted
Aether
Disproved by this experiment, turning up a null result
Michelson-Morley Experiment
This theory of Einstein's support these results
Special Relativity
Anything to which we describe motions and take measurements
Frame of Reference
This is constant regardless of THE ABOVE CONCEPT of observer
Speed of Light
Type of Experiment Einstein used to test this
Thought
This theory proved three concepts not to be constants, name one other than mass
Time or Length
+1
level 58
Oct 28, 2017
Some corrections: the force experienced due to gravitational acceleration is weight, not g-force. The Michelson-Morley experiment did not disprove the existence of the aether but rather placed the upper limit of the relative velocity of the aether at around 4-8 km/s, much lower than expected. Also, reference frame should be accepted and in the second hint it should be "its" instead of "it's".
+1
level 41
Oct 28, 2017
How would you define G force then?
+1
level 58
Oct 28, 2017
g-force is more of an effect during free-fall that gives the perception of weight. In fact, despite the name, it's a measure of acceleration rather than force. In short, g-force is the acceleration of an object relative to free-fall.