1- Please review your notes from class on Gravity. Gravity is a force. When I push down on you that is force being exerted on you. Your mass or the mass of any object is what it is made of. The mass doesn't change even if gravity changes. If you are on a space ship to Mars, your weight will decrease because gravity decreases. Your mass will remain the same.
2- If I throw a rock in the air and it falls, which it will, that is an example of gravity. Me pushing a car on a table is not, and neither is someone driving a car on the highway. An apple falling from a tree is also an example of gravity. Falling, anything falling is an example of gravity.
http://www.youtube.com/watch?v=xVz8P86poEQ&feature=related
3- What causes the gravitational force between the Sun and the Earth is their masses. As mass increases so does the gravitational pull between them, but as the distance increases, the force decreases.
4- Larger planets have greater relative strength when it comes to their gravitational pull. The reason you weigh less on the moon is because the moon is smaller and thereforce has a smaller gravitational pull than the EARTH.
5- Once you are outside the Earth's Atmosphere gravitational pull decreases. Remember what I mentioned in class. For only $250,000 you can take a special plane into space, just outside Earth's atmosphere and float around.
http://www.youtube.com/watch?v=7tEkKhMVoS4&feature=related (zero gravity video )
6- Your weight on Earth is the force gravity imposes on your mass. It is related to your mass, not your volume.
7- Review why NJ is warmer in the summer. Recall it is not the distance but it is the ANGLE at which the suns rays hit us. SOLAR Angles.
8- In the winter the sun in the sky is the shortest.
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