| A | B |
|---|
| Nuclear Fusion | When hydrogen crashes into each other and creates helium. |
| photosphere | the surface of the sun |
| core | center of the sun |
| milky way | the galaxy we belong to |
| hydrogen | the most abundant gas in the sun |
| helium | is heavier than hydrogen |
| ultra violet light | causes sun burns |
| Gravity and inertia | keep us in the correct orbit |
| An orbit | is a circular path an object follows around a larger object |
| Gravity and fusion | help keep the sun's shape |
| The Sun was created from: | a cloud of hydrogen gas |
| The earth gets _____ & _______ from the sun. | heat and light |
| How big is the sun? | The sun is a medium sized star. |
| How old is the Sun? | over 4 billion years old |
| How long does it take light to reach the earth? | 8 1/2 minutes |
| When the Sun begins to die it will become what? | red giant |
