Questions (roll mouse over to reveal answer)
What does small 'g' stand for in the equation W = mg?
What is approximate value of 'g' on Earth?
What is approximate value of 'g' on the Moon?
What are the units for 'g'?
Why is this equation useful?
Why is 'g' different on different planets?
Which object in our solar system has the largest 'g'?
Explain why this object has the largest 'g'
Where on a planet is 'g' the greatest?
What happens to the value of 'g' as you go further away from a planet?
How does this affect your weight?
Find your mass on the bathroom scales and then find your weight on different planets (click this link: http://www.exploratorium.edu/ronh/weight/)
Tuesday, March 29, 2011
Tuesday, March 22, 2011
Recall that the moons orbits the moon and that some planets have moons
http://www.bibalex.org/eclipse2006/PlutoEclipses.htm
How was the Moon formed?
-The Giant Impact Theory
According to this theory, the Moon was created from the debris ejected by an impact of a huge object (of the size of today's Mars) on our planet, about 4.53 billion years ago, when a molten Earth was still cooling down. Hence, formation of Moon is quite intimately connected to how was the Earth created. Let us understand how was the Moon formed from collision of young Earth with this huge Mars sized objecthttp://www.buzzle.com/articles/how-was-the-moon-formed.html
How old is the Moon?
-About four and a half billion years old
Why does the Moon only show one side to us all of the time?
-Because the moon orbits the earth in the opposite the directionThe Moon is slowly drifting away from us, by how much per year?
-about 4 cm a year
Explain what will eventually happen to it
-it will enter a stable orbit around the earth
How much larger is the Sun than the Moon?
-400 times larger
What natural phenomenon does this ratio help to observe?
-eclipse
Insert a video (and source) of the answer to the question above
How far away is the Moon?
-384403 KM from the earth
What was significant about the 19th March 2011 (regarding the Moon)?
-it was the closest to the earth it has been for the last 50 years
Why is there no atmosphere on the Moon?
-because it doesnt have enough gravity to hold an atmosphere to the moon
Why is the gravity on the Moon 1/6th than of Earth?
- Be cause it has no moon
How many people have stepped on the Moon? Who was the last?
-12, eugine
Why does the Moon orbit the Earth?
- the gravitational pull of the earth makes the moon orbit the earth
How many days does it take to orbit?
-27.32 days
What effect does the Moon have on the Earth?
- Tides
Insert a video (and source) of the answer to the question above
Other planets have moons, find images if those moons
How many moons are there in our solar system?
-170
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