STAAR Review DAY 7 EARTH AND SPACE

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Presentation transcript:

STAAR Review DAY 7 EARTH AND SPACE TEKS 8.8A (R), 8.8B (S), 8.8C (S), 8.8D (S) © Hedgehog Learning

We are just a speck… If we were traveling at the speed of light, it would take us _________ to reach ________. Moon Sun Saturn Nearest Star (Proxima Centauri) Crab Nebulae Center of the Milky Way Nearest galaxy (Andromeda) Other side of the universe 1 second 8 minutes 1 hour 4.2 years 6,500 years 26,000 years 2,500,000 years 93,000,000,000 years © Hedgehog Learning

Solar System Our own personal star Our solar system is extremely tiny compared to the Milky Way Galaxy. © Hedgehog Learning

Stars © Hedgehog Learning The stars we see at night are located “nearby” in the Milky Way galaxy. Stars in other galaxies are too far away for us to see them individually. Stars have “life cycles” similar to plants and animals. Average stars, like our Sun, are born in nebulas and die as red giants.

Life Cycles of Stars Models, like a Hertzsprung‐Russell diagram, show us how stars change over time. Based on this diagram, what would you say about the age of our Sun compared to other stars on the main sequence? Brighter © Hedgehog Learning Hotter Cooler

Galaxies © Hedgehog Learning Our galaxy, the Milky Way galaxy, is made up of BILLIONS of stars. There are BILLIONS of galaxies in the universe. Types of galaxies include: Spiral galaxies Barred spiral galaxies Elliptical galaxies Dwarf galaxies Ring galaxies

© Hedgehog Learning

© Hedgehog Learning

© Hedgehog Learning

I C © Hedgehog Learning E G B H F D A