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Constellations - PowerPoint PPT Presentation


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Constellations. Objectives for this unit:. a. Locate and identify stars that are grouped in patterns in the night sky. b. Identify ways people have historically grouped stars in the night sky. c. Recognize that stars in a constellation are not all the same distance from Earth. .

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Presentation Transcript
slide8

What is a constellation?

A constellation is an imaginary picture made using a group of stars forming a fixed pattern in the sky.

slide9

Every culture has created constellations.

There were many reasons why they were created.

slide10

Calendars

Knowing when certain constellations rise is very helpful if you are a farmer.

slide11

Religion

  • Constellations represented important religious figures.
  • People were constantly reminded of their religion.
slide12

Navigation

Know where you are as you travel.

Source: NOAA

slide13

Important Groups of Constellations

The twelve (thirteen, really!) constellations of the Zodiac*.

*Zodiac – Latin for “circle of animals.”

slide15

Circumpolar Constellations

Constellations that rotate around the North Pole and are visible all year.

Source: Windows on the Universe

slide16

Other constellations you should know

Orion

Found in the high southern winter sky.

slide17

Killed by a scorpion and placed in the sky.

Source: Dr. Islam’s Constellation page

http://www2.potsdam.edu/islamma/Phys335Constellations.htm

slide18

Boötes

Found in the northern sky during spring.

slide19

The herdsman is watching the bears.

Source: Dr. Islam’s Constellation page

http://www2.potsdam.edu/islamma/Phys335Constellations.htm

slide21

Scorpius

Found in the southern sky in summer.

slide22

Killed Orion. When Orion is seen, Scorpius is nowhere to be found!

Source: Dr. Islam’s Constellation page

http://www2.potsdam.edu/islamma/Phys335Constellations.htm

slide24

Look at Orion:

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Source: NASA StarChild

http://starchild.gsfc.nasa.gov/docs/StarChild/questions/question9.html

slide27

Constellations used for navigation.

The North Star helps find direction.

Runaway slaves used the Big Dipper (Drinking Gourd).