Gravitational Fields & the Tides
Find the weight of a 50-kg person on the Earth.
Find the gravitational force between a 50 kg person on the surface of the Earth and the Earth. The mass of the Earth is 5.98 x 1024 kg and the radius of the Earth is
6.38 x 106 m.
What does this mean about the weight of an object on the surface of the Earth and the gravitational pull between an object on the surface of the Earth and the Earth?
Why?
What is a formula for the acceleration due to gravity on the surface of a planet?
What two things do you need to know to calculate this?
Calculate the acceleration due to gravity on the surface of Venus. The mass of Venus is 4.87 X 10 24-kg and the radius of Venus is 6.052 X 106-m.
How does our calculated value compare to the value measured by space probes on the surface of Venus?
When you bring two magnets together, what happens?
Do the magnets have to be touching for this to happen?
What is a field force?
What is a gravitational field?
What is the equation for finding the gravitational field strength at
any distance from the center of an object (planet)?
Find the gravitational field strength of the Earth at a distance of 500,000-m above its surface.
What are tides?
What do we mean by high tide?
What do we mean by low tide?
Earth’s
Inertia
Explain how the Moon’s gravity causes the tides.
Explain how the Earth’s inertia causes the tides.
Draw the orientation of the Sun, Earth & Moon
during the Spring Tides.
Draw the orientation of the Sun, Earth & Moon
during the Neap Tides.
Which type of tides has the greater tidal range?
How often do Neap Tides & Spring Tides alternate?
Why?