3 Questions for my science homwork that i cant find. Please help?

Question

Which observable change would occur in New York State if Earth's rate of rotation were one-half its present rate?
1. The Sun would rise in the southwest each day.
2. The length of a day would be longer.
3. The time needed to complete a cycle of Moon phases would be greater.
4. The seasonal changes would not occur.
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Which observation cannot be explained by a geocentric model?
1. Stars follow circular paths around Polaris.
2. The Sun's path through the sky is an arc.
3.A planet's apparent diameter varies.
4.A freely swinging pendulum appears to change direction
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Which statement provides evidence that Earth revolves around the Sun?
1.Winds at different latitudes are curved different amounts by the Coriolis effect.
2.Different star constellations are visible from Earth at different seasons of the year.
3.The Sun follows an apparent arc across the sky during the day.
4..The stars appear to circle Earth during the night.

Answer 1

2 - Instead of 24 hour days we'd have 48 hour days.

4 - A geocentric model says that the Earth is at rest. A Foucault pendulum appears to change direction as it swings because the Earth is rotating.

2 - As we go around the sun, whichever constellations are aligned with the sun can't be seen due to the brightness of the sun (and the fact that they'd be in the sky during the day). Six months later, when we're on the opposite side of the sun, they are easily seen at night.

Answer 2

The length of the day would be longer. The day happens because the Earth rotates. The Sun rises and sets where it does because of the direction of Earth's rotation, and the length of the day is because of the rate of its rotation.

I believe the pendulum changing directions is the second answer. It proves that the Earth is rotating.

The third answer is 2. This happens because as the Earth goes around the Sun, it appears to move through the constellations as seen from Earth. The other phenomina are caused by the Earth's rotation, or by the tilt on its axis.

Answer 3

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Answer 4

2,4,3