Science Starter Name as many planets as you can in order (closest to farthest from the sun). 2. Do you know any acronyms for remembering the order of the planets? 3. What makes life possible on Earth?

Lesson Essential Question How did the solar system form?

Ancient Worlds?? http://www.theguardian.com/science/2015/jan/27/ancient-planetary-system-kepler-444-milky-way-galaxy https://www.youtube.com/watch?v=RlidbLyDnPs

Our Galaxy

Sooo… How’d it happen?

Directions for Notes You only need to write the information in YELLOW. Please write your notes in your notebook under Unit 1: Astronomy Day 1: Formation of our Universe

The Beginning… Big Bang Theory- 14 Billion years ago a massive explosion started our universe

Solar Nebula Theory Nebula-cloud of dust & gas in space Nebular Theory-the sun and planets formed from a rotating disk of dust and gases.

Our Solar System

How to remember the order… My = Mercury Very = Venus Educated = Earth Mother = Mars Just = Jupiter Sold = Saturn Us = Uranus Nine = Neptune Pizzas = Pluto

DO NOW 1. Our galaxy is called the _____________. 2. According to the Big Bang theory, the universe began about ____. 3. Name all of the planets in order (remember the acronym) 4. The formation of the solar system from a huge cloud of dust and gases is called the _________. 9/8/2015

Size Comparison 99.85% of our solar system’s mass is contained in the sun The planets make up the remaining 0.15% The sun’s gravitational force guides the planets as they orbit

Turn & Talk Turn to the partner at your side and share with them the following: What information do you know about our sun? (if any)

Our Sun Do you know- 1.3 million earths can fit inside 870,000 miles wide 93 million miles away from earth 8 ½ minutes for light to reach earth How hot? 10,000 million degrees

The power of the Sun… The Sun gives us heat, light, our food, and the air that we breathe. It powers the atmosphere to give us the winds and rain. Even the coal and oil that generate electricity for light and power come from plants and animals that lived hundreds of millions of years ago and depended on the Sun for life.

We Aren’t as Big as We Think.

Terrestrial & Jovian Planets Terrestrial Planets – Mercury, Venus, Earth, & Mars (small & rocky) Jovian Planets – Jupiter, Saturn, Uranus, & Neptune (huge gas giants) Pluto does not fit well into either category

Who discovers all this?? Stephen Hawking Astrophysicist Black holes & Radiation Amyotrophic Lateral Sclerosis (ALS) Many books, movies, and TV shows

Compare & Contrast Use your textbook (reading, tables, & figures on pgs. 645-647) to create a chart comparing Terrestrial & Jovian Planets You have 10 minutes to work quietly in your desk – you may discuss your chart with students sitting near you

Compare & Contrast Factors to consider: Distance between planets Size of diameter Density Speed of Rotation Atmosphere Composition (what are these planets made of) Terrestrial Planets Jovian Planets

Compare & Contrast Terrestrial Planets Jovian Planets Orbits are close together Orbits are far apart Smaller diameter Larger diameter More dense Less dense Rotate slower Rotate faster Thin or no atmosphere Thick atmosphere Composed mostly of rocky & metallic substances, with few gases & ices Mostly made of gases and ices, but with rocky and metallic materials in their cores