Satellites Section 8.11.

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Presentation transcript:

Satellites Section 8.11

Satellites 1 natural satellite – the Moon 1000s of artificial satellites More than 40 countries have put more than 3000 satellites into orbit! Orbit outside the Earth’s atmosphere at altitudes of 200km to 35 000 km! Human occupied: Space shuttle International Space Station (is 350 km from Earth and takes 90 min to orbit Earth)

Canada’s Role World leader in the last 50 years in developing satellite technology Have built very powerful telecommunication and Earth observation satellites

Staying in Orbit The force of the Earth’s gravity constantly pulls the satellite towards Earth The forward motion of the satellite and the curvature of Earth prevents it from falling into the atmosphere

Types of Orbits Low Earth Orbit Satellites: Altitudes up to 2000 km Human occupied & Earth observation Medium Earth Orbit Satellites: Altitudes up to 35 000 km GPS satellites Geostationary Orbit Satellites: Its path is directly over the equator with a period equal to the period of the Earth’s rotation. Appear motionless in the sky Used to broadcast TV and radio

Today’s Tasks Pg. 351 #1-6, 9 Read Mysteries Beyond the Planets (Pg. 353) and summarize the article in one paragraph.