Explain what effect the scenario in question 1 will have on the polar ice caps.
Question 3
3.
Explain why the loss of ice is so important to the feedback loop that drives climate change, and why gaining ice creates a feedback loop that can lead to an ice age.
Question 4
4.
Question 5
5.
Question 6
6.
The following is a force diagram of a body falling towards a black hole. Explain why Ffeet is so much bigger than Fhead
Question 7
7.
Question 8
8.
Question 9
9.
A clown riding a unicycle on a railway car throws a ball in the air as he passes a railroad station. Match the ball’s motion to the frame of reference of the person watching the performance
Question 10
10.
Question 11
11.
Question 12
12.
If the impact theory involves another planet smashing into the Earth and creating the moon, why would the moon be so similar to the Earth in composition? Wouldn’t it be closer in composition to the planet that crashed into the earth?
Question 13
13.
Describe the process that creates the earth’s magnetosphere.
Question 14
14.
Why would giving Mars a magnetosphere be a first step in terraforming Mars?
Question 15
15.
Extra credit - Why can I not solve
for k using the orbital period for earth and the average distance from the sun for earth, and use that k to determine how quickly the sun moves around the center of the galaxy?
Eventually the earth will have the northern hemisphere tilted towards the sun at perihelion instead of at aphelion. The process by which the direction of the earth’s tilt changes is called
geocentrism
parallax
centripetal
precession
Currently the earth is situated with the angle of tilt at 23 and is decreasing. Does this mean
The ice caps will have more direct sunlight and will lose more ice
The arctic will be closer to the sun in winter and further from the sun in summer, preserving more of the ice
The ice cap will have less direct sunlight, which will serve to preserve more of the ice.
The arctic will be further from the sun in winter and closer to the sun in summer,
Which of the following is the best description of the Milankovitch cycles?
The current theory of how the earth acquired a moon
The theory that the planets orbit the sun and not the earth
The theory of why angular momentum means that a solar system is a flat disk
The cycles of precession, tilt angle and eccentricity that change the earth’s climate
What happens to that body is called
Aphelion
perihelion
antipode motion
spaghettification
Which of the following is another term to describe the above phenomenon?
Tidal force
Centripetal force
inertia
frame of reference
Scientists of his day rejected Copernicus’ theory of heliocentrism for 4 specific reasons. Which of the reasons was resolved by Kepler?
If the earth moved, there would be a parallax effect with close stars compared to starts further away. Kepler determined that the stars are much farther away than we thought, eliminating any chance of perceivable parallax.
A projectile that is shot due south should land further east than expected. Kepler determined that this did happen, but it was a very very small amount
Recalculating Mars’s circular orbit around the sun instead of the earth wasn’t any more accurate in predicting where Mars would be than geocentrism. Kepler determined that the orbit was elliptical
Nothing else revolves around anything but the earth. Kepler discovered moons that revolved around Jupiter.
How much faster a planet or comet moves at perihelion vs at aphelion will depend on the
Average distance of the planet or comet from the sun
The eccentricity of the planet or comet’s orbit
The size of the planet
The distance between the planet or comet and the earth