The Sun, the Earth, and the Moon

Objects in the sky!

Let's find out!

How do the Sun and Moon affect the Earth?

What we know about the night sky was known through observations, or specific​ things we notice through the use of our senses.

Observations

Stars: A giant ball of superheated gas.
Planets: Large objects that orbit the Sun.
Satellite: A body that orbits a planet.

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Stars, Planets, and the Moon

Vocabulary

Comet: Loose collection of ice and dust that orbit the Sun
Meteor: A streak of light created by a burning space rock.
Constellation: A group of stars.

Final Vocabulary...for now

Geocentric: The Earth is the center of the Solar System
Heliocentric: The Sun is the center of the Solar System.
Ellipse: Oval shaped.

Open Ended

What is a planet?

Multiple Choice

How many planets are in the solar system?

• 9

• 6

• 3

• 8

Multiple Choice

What is the Sun?

• A satellite.

• A star

• A Planet

• A Black Hole

Open Ended

Exit Ticket: "How are Planets, Stars, and Satellites different from each other?"

Which example is a pattern?

• Example A: 529403

• Example B: 123123
  
  

• ​Icy rocks, Meteoroids, burnt from our atmosphere.

• ​Bright streaks of light.

• Also known as Shooting Stars.

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Meteors

• Mixture of dust and ice.

• Burnt by the Sun

• ​Comes with a glowing tail of hot dust and gas

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​Comets

• Grouping of stars.

• Takes the pattern of animals/objects.

• The sky contains 88 Constellations.

Constellations

You can use constellations like a compass!

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Constellations Cont.

Open Ended

How can these pictures help remind you what constellations are?

Movement in the sky

Poll

How are you today?

• Good! Happy!

• I'm alright... Meh

• Not so well.

• Tired/

  Bored

• Constellations stay in the same position each month.

• Yet, change from month to month.

• Because of Earth's rotation.

• Rotation: Movement along an axis.

Seasons

Open Ended

Why would we need a different star charts/maps for Winter and Summer?

• Geocentric Model

  • The Earth at the center of the Solar System.

• Many philosophers, including Aristotle, thought to be true.

• Greek Astronomer Ptolemy, in 140 CE, developed the idea!

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• The Sun at the center of the solar system.

• Nicolaus Copernicus

  • Planets rotate and revolve

  • Reason to explain Stars/Sun movement
    
    

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Heliocentric Model

​Helios, Greek God of the Sun

Conducted research to prove the Heliocentric Model with observations of Jupiter.

Galileo

Tycho Brahe noticed shape of Solar System was not a circle.

Johannes Kepler proved the Solar System has an ellipse shaped orbit.

​Brahe & Kepler

Further Evidence

Open Ended

How does the development of the Heliocentric model show how scientific ideas change over time?