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There is no gravity in space. True or false?
F. Gravity doesn’t disappear because someone leaves the Earth’s surface. Every object in space attracted other object by the force of gravity.
The Moon is a satellite.True or false?
T. Satellites can be natural, such as the Moon orbiting the Earth. Satellites can also be artificial.
All objects – even people are attracted towards each other by gravity. True or false?
T. Even people are attracted towards each other by gravity, but this force is so small that it is not noticeable.
A 1 kg mass dropped from a 100 km high tower would float away.
F. The 1 kg object would fall downwards toward the centre of the Earth.
On scale of building, gravitational field is: A)increasing B)decreasing C)uniform D)varying
C)uniform
What is mean by geostationary satellite?
satellite which is placed directly above the Equator with a circular orbit and angular velocity identical to that of the Earth
What are 4 uses of geostationary satellites?
1)communication, 2) TV broadcasting, 3) weather monitoring, 4) military
What is Polar Satellite?
These are low altitude satellites. This means they orbit around earth at lower heights. They orbit around the earth in North-South direction.
What is the time period of Polar Satellite?
about 100 min
What are the uses of polar satellites?
Satellites with polar orbits are used for monitoring the weather, military applications (spying) and taking images of Earth's surface
When and where was the first satellite launched in the world?
October 4, 1957, The world's first artificial satellite was about the size of a beach ball (d=58 cm),from Baikonur Cosmodrome.
what is the meaning of space trash?
unwanted objects or material left in space by human activity, such as pieces of destroyed satellite
How many active and dead satellites are in space? (give approximate numbers)
While there are about 2,000 active satellites orbiting Earth at the moment, there are also 3,000 dead ones littering space
What is the purpose of the Hubble telescope?
The telescope observes comets and planets, discovered moons around Pluto, it has helped scientists understand how planets and galaxies form.
Which country launched the Hubble Space Telescope?
The Hubble telescope was built by the United States space agency NASA with contributions from the European Space Agency.
does kazakhstan have satellites? (how many?)
KazSat, the first Kazakh space satellite, was launched on June 18, 2006 . KazSat-2, KazSat-3
