Earth Science H Unit 2 study guide

what is astronomy?

• study of celestial objects and their physics, chemistry, geology

• the study of the origin, structure, & future of the universe

• all existing matter & space 

• telescope

what is  Cosmology

• all existing matter & space 

• study of celestial objects & their physics, chemistry, geology

• the study of the origin, structure, & future of the universe

• study of planets

what is the universe?

• all existing matter & space

• branch of science concerned with the investigation & measurement of spectra produced when matter interacts with or emits electromagnetic radiation

• cosmic radiation

Our Cosmic Address

Earth-________

solar system

milky way galaxy

_____________

Virgo super cluster

Observable Universe- ________

Before we could travel into space, or put-up satellites, how did we know Earth was round?

• ships disappeared over the horizon 

• Curved shadow across the moon

• they had maps

• they recorded star navigatiom

Oblate Spheroid- it bulges in the middle because _______

how do we observe the universe?

• with our eyes

• by listening

• science

• mathematics

people have investigated space for how long?

• thousands of years

• hundreds of years

• millions of years

• a few years

1000 BCE:

• Assyro-Babyloanians looked  at stars navigation, recorded positions of  planets, times of eclipses, etc.

• Ancient  Greek mathematician Aristarchus was 1st to propose a "new" Sun centered cosmology à not supported

• 1st primitive telescopes were created in the Netherlands!

270 BCE:

• Ancient  Greek mathematician Aristarchus was 1st to propose a "new" Sun centered cosmology à not supported

• Assyro-Babyloanians looked  at stars navigation, recorded positions of  planets, times of eclipses, etc.

• 1st primitive telescopes were created in the Netherlands!