| Question | Answer |
| What is a star? | An object that produces it's own energy |
| Describe the Sun's size in comparison to other stars? | an average size |
| How many Earth's can fit in the sun? | More than 1,000,000 |
| What is the name of the closest star system? | Alpha Centauri System |
| The mass of the Sun makes up how many percent of the mass in the Solar System? | 99.8% |
| What two gases is the sun mostly made of? | 71% Hydroge and 21% Helium |
| Where is the energy of the sun made? | in it's core |
| What is the temperature in the sun's core? | 10,000,000 to 20,000,000 |
| What is the pressure like in the sun's core? | more than 1,000,000,000 times |
| What is the layer after the core? | radiation layer |
| How long can it take for the energy to move out of the radiation region? | millions of years |
| What happens in the convection layer? | Gasses with different energies move in circles |
| What is the photoshere? | it is the visible surface of the sun made up of a layer of gasses |
| What is the temperature of the photosphere? | 5,730 C or 10,346 F |
| What is the inner layer of the Sun's atmosphere called? | chromosphere |
| What color is the chromoshere | red |
| What is the name of the outermost layer of the Sun's atmoshere? | corona |
| What is a solar flare? | bursts of heat and energy |
| How do solar flares affect the Earth? | they send out radiation affecting sattlelights and tv's |
| What is the aurora borealis? | different colored lights in the atmosphere also called Northern Lights |
| Solar Flares are sometimes assoiated with sunspots. What are sunspots? | regions of the photosphere that have a lower temperature |
| In words what is E=mc | energy = mass speed of light |
| What do you call the smashing together of particles to make energy? | fusion |
| How does the sun make its energy? | when hydrogen particles combine to make helium |
| What happens to the mass that is loss when particles collide? | it is changed to energy |
| What lies at the center of the solar system? | the sun |
| What objects in space are included in the solar system? | eight planets |
| Name te first four planets, the inner planets, in order from nearest to farthest from the sun. | Mercury, Venus, Earth, Mars |
| Name the outer four planets in order from nearest to farthest from the sun | Jupiter, saturn, uranus |
| What is a telescope? | instrument that uses lenses to see distant objects. |
| What is a moon? | an object that circles around a planet |
| What is the name of the largest moon in the solar system? | Gunymede |
| Where is the largest moon found?` | Jupiter |
| What is another name for a moon? | Satellite, an object in space that circles around another object |
| What is a man made satellite? | They circle around earth to provide weather information and commuication systems |
| Whay does themoon have somany craters in comparison to the Earth? | It has no atmosphere so the objects that fall toward it do not burn up |
| What is an asteriod? | A rock that revolves around the sun |
| Where are most asteroids found? | between marsand jupiter |
| What is a comet? | a mixture of frozen gasses ice dust and rock |
| How is a comets tail made? | it is produced by energy from the sun |
| What happens to a comet's tail as it nears the sun? | It blows away from the comet |
| What are the other small objects in space called? | meteroids |
| What are meteroids called when the enter the Earth's atmosphere? | meteors |
| What is the basic definition of Gravity? | a force of attraction between 2 objects |
| What are the two things that affect the strength of gravity? | mass and distance between 2 objects |
| Compare the moons Gravity to the Earth's | the moons gravity is about 1/6 that of the Earth's |
| What is weight? | amount of mass X gravity |
| What is an orbit? | a path that one object takes around another object |
| How are planets held in their orbits around the sun | by inertia |
| What is inertia | the tendancy of a moving object to keep moving in a straight line |
| Why do the planets not fall in towards the sun because of gravity? | Because inertia and gravit makes Earth orbit the un instead of gravity pulling it into the sun and inertia makes it go in a straight line |
| In what type of circular orbit do planets orbit around the sun? | the ellipse orbit |
| what is the difference between to rotate and to orbit? | orbit makes an object move around another object and to rotate makes it rotate to a different side |
| What causes tides on Earth? | The sun'sgravity pulling the Earth and the moons gravity pulling the Earth |
| when do high tides occur? | twice a month when the sun and moon line up and both pulls are added together |
| When do low tides occur? | When the moon pulls the water on the side nearest to it away from the land |
