introduction to satellite technology 12 th grade science class cindy garis

Introduction to Satellite Introduction to Satellite TechnologyTechnology

1212thth Grade Science Class Grade Science Class

Cindy GarisCindy Garis

Introduction to Satellite TechnologyIntroduction to Satellite Technology

The objective of this lesson is to gain a better The objective of this lesson is to gain a better understanding of what a satellite is and how understanding of what a satellite is and how it works.it works.

NavigationNavigation

Click to go backwardsClick to go backwards

Click to return to the Main MenuClick to return to the Main Menu

Click to go forwardClick to go forward

Main MenuMain Menu

Section:Section:

(1)(1) Define Satellite and OrbitsDefine Satellite and Orbits

(2)(2) First Satellite and number of Satellites First Satellite and number of Satellites

(3)(3) How we communicate with a Satellite How we communicate with a Satellite

(4)(4) Satellite applications Satellite applications

Section 1: Define Satellite and Section 1: Define Satellite and OrbitsOrbits

A satellite is an object in orbit around a A satellite is an object in orbit around a celestial body. celestial body.

Orbit – the path of a satellite around a Orbit – the path of a satellite around a body (e.g. the earth) which is stable body (e.g. the earth) which is stable under the influence of gravity. under the influence of gravity.

Satellite is falling towards earth. It never Satellite is falling towards earth. It never crashes – it orbitscrashes – it orbits

Section 1: Define Satellite and Section 1: Define Satellite and OrbitsOrbits

ORBITAL LEVELS

– LEOS: LOW EARTH ORBIT (100-300mis.MILES)

– MEOS: MEDIUM EARTH ORBIT (6,000 – 10,000 MILES)

– GEOS: GEOSTATIONARY EARTH ORBIT (22,223 MILES

TYPES OF ORBITS:

– ELLIPTICAL (APOGEE AND PERIGEE)

– CIRCULAR– POLAR– GEOSTATIONARY

Section 2: First Satellite and number Section 2: First Satellite and number of satellitesof satellites

Sputnik 1 was the Sputnik 1 was the first artificial satellite first artificial satellite launched October 4, launched October 4, 1957.1957.

There have been There have been 4000 satellites 4000 satellites launched in history. launched in history. There are 2200 There are 2200 currently in orbit.currently in orbit.

History of Sputnik1History of Sputnik1

Number of man-made Number of man-made satellites in orbitsatellites in orbit

http://history.nasa.gov/sputnik/

http://ask.yahoo.com/20010116.html

http://ask.yahoo.com/20010116.html

Section 2: First Satellite and number Section 2: First Satellite and number of satellitesof satellites

The largest satellite orbiting the earth is The largest satellite orbiting the earth is the moon.the moon.

Section 3: How we communicate Section 3: How we communicate with a Satellitewith a Satellite

A transponder receives transmissions A transponder receives transmissions from earth (uplink), changes signal from earth (uplink), changes signal frequency, amplifies the signal and frequency, amplifies the signal and transmits the signal to earth (downlink).transmits the signal to earth (downlink).


Uplink

Downlink

Section 4: Satellite applicationsSection 4: Satellite applications

Satellites are used for the following applications:

– TELECOMMUNICATIONS– BROADCASTING– NAVIGATION– WEATHER– GPS– MILITARY

Multiple choice Question 1 of 3Multiple choice Question 1 of 3

1)1) What is the largest satellite?What is the largest satellite?

a)a) Sputnik 1 Sputnik 1

b)b) The moon The moon

c)c) GPS system GPS system

Question 1Question 1

a)a) Sorry, wrong answer.Sorry, wrong answer.

Sputnik 1 was the first man-made Sputnik 1 was the first man-made satellite launched. satellite launched.

Go back to the main menu and review Go back to the main menu and review Section 1 to try again.Section 1 to try again.


b)b) Correct!Correct! The moon is the largest satellite. The moon is the largest satellite.

Click the right arrow to proceed to Click the right arrow to proceed to question 2.question 2.


2)2) Currently, how many satellites are there Currently, how many satellites are there in orbit?in orbit?

a)a) 4000 4000

b)b) 3000 3000

c)c) 2200 2200


a)a) Sorry, wrong answer.Sorry, wrong answer.

GPS is an application of a man-made GPS is an application of a man-made satellite. satellite.

Go back to the main menu to review Go back to the main menu to review Section 1 and try again.Section 1 and try again.


a)a) Wrong answer.Wrong answer.

There have been 4000 satellites There have been 4000 satellites launched in history.launched in history.



b)b) Wrong answer.Wrong answer.

3000 was not mentioned anywhere.3000 was not mentioned anywhere.



c)c) Correct!Correct!

There have been 4000 satellites There have been 4000 satellites launched history.launched history.

Click the right arrow to proceed to Click the right arrow to proceed to question 3.question 3.


3)3) When A transponder receives When A transponder receives transmissions from earth this is typically transmissions from earth this is typically known as an:known as an:

a)a) Downlink Downlink

b)b) Amplify Amplify

c)c) Uplink Uplink


a)a) Wrong answer.Wrong answer.

A transponder receives transmissions from A transponder receives transmissions from earth (uplink), changes signal frequency, earth (uplink), changes signal frequency, amplifies the signal and transmits the signal to amplifies the signal and transmits the signal to earth (downlink).earth (downlink).

Go back to the main menu to review Section 3 Go back to the main menu to review Section 3 and try again.and try again.


b)b) Wrong AnswerWrong Answer


Go back to the main menu to review Go back to the main menu to review Section1 and try again.Section1 and try again.


c)c) Correct!Correct!


Proceed to next slide.Proceed to next slide.

The EndThe End

introduction to satellite technology 12 th grade science class cindy garis

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