| A | B |
|---|
| Axis | The imaginary line which earth spins upon |
| Rotation | The spinning of the Earth |
| How many hours (exactly) does it take for the Earth to make a complete rotation? | 23 hours and 56 minutes |
| Magnetosphere | From the poles these lines of force spread out to form a magnetic field. |
| Earth rotates on its....... | Axis |
| Revolution | The movement of a body in space around another body. |
| How long does it take earth to rotate the sun? | 356 Days (one Earth year) |
| Orbit | The path which a body follows as it revolves around another body |
| Perihelion | The point hich the Earths orbit is closest to the sun, which occurs January 3. |
| Aphelion | The point in which the Earths orbit is farthest from the sun, this occurs June 3. |
| How far does Earth travel per hour? | about 109,000 km/hr |
| What degreeof an angle is Earth tilted upon? | 23.5 Degree |
| What does the Earths axis point towards? | The sun. |
| Zenith | When the sun is at its highest point in our sky. This occurs at noon. |
| Solstice | The angle of the sun, which increases as Earth moves and aligns. |
| Equinox | when the noon sun is directly over the equator, during this time the hours of daylight abd darkness are equal everywhere on Earth EXCEPT at the poles. |
| What is the Earths only natrual satelite? | Our Moon |
| Moon | Largest natrual satelite, has no magnetic field. Responsible for tides. |
| The surface of the moon is.... | Cold! There is no water, atmosphere or weather. |
| Perigee | The moons closest point to the Earth |
| Apogee | The moons farthest point from the Earth |
| How long does it take for the moon to fully rotate the Earth? | 27.3 days |
| What is the most accepted theory of how the moon was formed? | The impact theory which states taht an impact knocked a large quantity of material from Earth. Earths gravity captured and collected the material to form the moon |
| Eclipse | The shadow which is created when one planet passes between the sun and another body |
| Umbra | In the shadow where the light is completely blocked, the small dark ares. |
| Penumbra | The partial shadow where some light is blocked and other light fills it in. |
| Lunar Eclipse | When the moon moves into the Earths shadow |
| Solar Eclipse | When the moon passes between the sun and Earth. |
| When do the highest high and lowest low tides occur? | When the sun Earth and moon align. (spring tides) these occur during the full and new moons |
| When do the lowest hight tides and highest low tides occur | When the sun, moon, and Earth form a right angle, these are Neap tides, they occur during the quarter moon phases |
| What is the center of the solar system? | the sun |
| What is the solar system? | The sun, moon and all 8 planets and some smaller objects that orbit the sun |
| What happens during nuclear fusion? | The mater contained in four hydrogen nuclei rearranges to create a helium nucleus. As a result some of the original matter becomes energy. |
| What is the suns major "fuel?" | Hydrogen |
| WhaWhat is the innermost part of the sun called? | The core, where nuclear fusion occurs. |
| Right outside the Core is......? | The radiation zone which is a zone with heat energy being produced bye fusion which radiates outward spreading from atom to atom |
| What is the convection zone? | Where mater in the sun expands and rises, then cools and becomes denser then sinks back. |
| Photosphere | The outermost layer of the sun, also the first layer of the suns atmosphere. |
| Cromosphere | The second layer of the suns atmosphere. |
| Corona | The third layer of the suns atmosphere |
| Solar wind | when the corona of the sun sends a stream of high energy particles into space the stream is called a solar wind. |
| What is the order of the planets (from closest to the sun to farthest) | Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto. MVEMJSUNP |
| asteroid | small irregularly shaped bodies. |
| Meteors | Another term for Shooting star. |
| Electromagnetic Spectrum | All types of electromagnetic wave energy, from very low to very high frequency makes up the electromagnetic spectrum. |
| What is the Keck | The largest multiple-mirrored telescope , which is lovcated on top of Mauna Kea, an extinct volcano in Hawaii. |
| Parallax | The apparent change of position of an object caused by a change in the position of the ovserver. |
| Light year | the distance that light travels at a speed of 310 000 km per second! |
| Nebula | Great clouds of gas and dust |
| Galaxy | a collection of stars, nebulea, gasses, dust, and planets. |
