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D - Science - Ch 16
The Sun
| Question | Answer |
|---|---|
| The sun’s energy comes from what process? | nuclear fusion |
| What occurs in nuclear fusion? | hydrogen atoms join together to form helium atoms and produce energy |
| Where does nuclear fusion occur in the sun? | in the sun’s center, or core |
| Order the layers of the sun’s interior from inner layer to outer layer. | the core, the radiation zone, and the convection zone |
| Order the layers of the sun’s atmosphere from inner layer to outer layer. | the photosphere, the chromosphere, and the corona |
| Which layer do you see when you look at a typical image of the sun? | the photosphere |
| How can you identify the chromosphere during a total solar eclipse? | it has a reddish glow visible just around the photosphere |
| Why can you see a corona during a total solar eclipse? | the moon blocks light from the photosphere, so the corona becomes visible |
| The corona sends out a stream of electrically charged particles called the ________________________. | solar wind |
| What are three features on or above the sun’s surface? | sunspots, prominences & solar flares |
| What are sunspots? | areas of gas on the sun’s surface that are cooler than the gases around them |
| What are prominences? | reddish loops of gas that link different parts of sunspot regions |
| What are solar flares? | large eruptions of gas out into space |
| When solar flares increase solar wind from the corona, what do they cause in Earth’s upper atmosphere? | auroras, or magnetic storms |