Early Astronomy
Presentation
•
Science
•
9th Grade
•
Hard
Standards-aligned
Angela Juarez
Used 10+ times
FREE Resource
8 Slides • 3 Questions
1
Early Astronomy
2
Ancient Greeks
The "Golden Age" of early Astronomy was center in Greece (600 B.C - A.D 150)
Greeks used philosophical arguments to explain the natural world and observations
3
Ancient Greeks
They used trigonometry and geometry to measure the sizes and distances of the sun and the moon.
4
5
Fill in the Blanks
According to Aristotle, the Earth must be round because
Type answer...
6
Aristotle (Greek philosopher)
said the world was round because it always casts a curved shadow on the moon when it pases between the moon and the sun.
7
8
Eratoshenes
discovered the circumference of the planet was about 39, 300 kilometers
know we know that it is actually 40, 075 kilometers
9
Multiple Choice
What did Eratosthenes discovered?
the earth's circumference
that the earth is round
the earth's distance from the sun.
10
Hipparchus
he catalog all the stars
determined the location of almost 850 stars
he divided stars into 6 groups according to their brightness.
he determined how long was a year
11
Open Ended
What did Hipparchus discovered?
Early Astronomy
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