8L — Earth And Space Flashcards
1) What is the space around a magnet called?
The space around a magnet is called the magnetic field.
How does the force of gravity get stronger on an object?
— If the objects have large masses
— If the objects are close together
What is the gravitational field strength on the earth?
On Earth, the force is approximately 10N.
1) Why is gravity not as strong on the moon than on the earth?
If you went to the moon,
2) Would your mass change?
3) Would your weight change?
1) Gravity is not as strong on the Moon because the Moon has a much smaller mass than the Earth.
2) Your mass would not change.
3) Your weight would be less than on Earth because the Moon’s gravity is weaker.
What is the formula to calculate the weight of an object?
weight (N) = mass (kg) × gravitational field strength (N/kg)
1) What is a satellite?
2) What kind of satellite is the moon?
3) What kind of satellites are man made and what do they do?
1) A satellite is anything that orbits around a planet.
2) The moon is a natural satellite of the Earth.
3) Artificial satellites are put into orbit around the Earth or other planets. They can be used for taking pictures or transmitting TV programmes.
1) What is the Sun?
2) What are groups of star patterns called?
1) The Sun is a star. It is a ball of gas that gives out large amounts of energy.
2) Groups of star patterns are called constellations.
What is a light year?
A light year is the distance that light can travel in one year.
What is an elliptical orbit?
An elliptical orbit is an oval shaped orbit.
