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Science
Chapter 10, Lesson 3
Question | Answer |
---|---|
Star | a huge ball of superheated gases. The sun is ours at the center of our solar system. |
Sun | largest object in solar system, the source of most energy on Earth, life could not exist without it |
Sun | made up of gases (mostly hydrogen and helium) |
Sunspots | these (dark spots) and solar flares (hot fountains of gas) appear on the sun and last only a few days |
Alpha Centauri | the three stars closest to our solar system make up this |
Color | this tells us about a star's temperature: |
Red | color that represents the coolest star |
Yellow | color that represents in between hottest and coldest star (the sun is an example) |
Blue | Color that represents the hottest star |
Constellations | groups of Stars are called these. They form imaginary pictures in the sky. |
Names | ancient people gave constellations these |
Sailors | they used these patterns (constellations) that served as landmarks in the sky |
Milky Way | the galaxy in which our solar system lies. |
Galaxy | a huge system of gases, dust, and billions of stars. We have a million of these in our universe. |
Universe | everything that exists in space. |
Galaxies | can be spiral shaped, look like balls or eggs, or have no regular shape |
East | The sun appears to rise in the __________ and set in the west, but the Earth is actually moving |
Seasons | caused by the Earth revolving around the sun |