Using the diagram describe the general principle of gravity survey.

Discussion

Work in groups and answer the given below questions. Give your explanations.

2. Could we survive without gravity?

3. What would happen if there were no gravity on Earth?

4. What would happen if gravity were to suddenly double?

5. How much does planet Earth weigh? How is it possible to measure this?

6. How can tracking the movement of two orbiting satellites help in mapping differences in gravity?

Work in groups and enumerate all the possible solutions to the problem. Discuss and give the explanations.

For more than 40 years, scientists have tried to figure out what's causing large parts of Canada, particularly the Hudson Bay region, to be "missing" gravity. In other words, gravity in the Hudson Bay area and surrounding regions is lower than it is in other parts of the world, a phenomenon first identified in the 1960s when the Earth's global gravity fields were being charted. Why can parts of Canada be "missing" gravity?

Comment on the following statements.

1. “Gravity is a contributing factor in nearly 73 percent of all accidents involving falling objects.” Dave Barry

2. “Love is metaphysical gravity” R. Buckminster Fuller

3. “Opinion is like a pendulum and obeys the same law. If it goes past the centre of gravity on one side, it must go a like distance on the other; and it is only after a certain time that it finds the true point at which it can remain at rest.” Arthur Schopenhauer

4. “From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free.” Jacques Yves Cousteau

5. “Not believing in force is the same as not believing in gravity.” Leon Trotsky

6. “It has been said that arguing against globalization is like arguing against the laws of gravity.” Kofi Annan

7. “I've been noticing gravity since I was very young.” Cameron Diaz

8. “Driving a motorcycle is like flying. All your senses are alive. When I ride through Beverly Hills in the early morning, and all the sprinklers have turned off, the scents that wash over me are just heavenly. Being House is like flying, too. You're free of the gravity of what people think.” Hugh Laurie

9. “To hear some men talk of the government, you would suppose that Congress was the law of gravitation, and kept the planets in their places.” Wendell Phillips

Дата добавления: 2015-10-26