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Objects in the Sky
Position and Motion of Objects in the Sky
| Question | Answer |
|---|---|
| Season | A part of a year marked by a change in weather. Examples are summer, fall, winter, and spring. |
| Tilt | Refers to the 23.5 degree angle to the Earth's axis. |
| Axis | A straight line passing through Earth's center and poles. |
| Revolution | Movement of Earth around the Sun. |
| Rotation | Movement of Earth around its axis. |
| Solar System | The Sun and the objects that are traveling around it. |
| Planet | The objects around the Sun (these objects travel around a star in a path). |
| Dwarf Planet | A celestial body that orbits the Sun and is big enough that gravity makes the planet take the shape of a round ball. |
| Asteroids | Rocky and metallic objects that orbit the Sun but are too small to be considered planets. |
| Comets | A relatively small and icy mass in the Solar System, usually larger than a meteoroid. Leaves a dust and gas tail when passing the Sun. |
| Gravitational Pull | The attraction that one object has for another object due to the invisible force of gravity. |
| Phases of the Moon | The different shapes of the moon seen from the Earth. |
| Star | A ball of mostly hydrogen and helium gas that shines extremely brightly. |
| Constellations | Patterns of stars in the sky. |
| Lunar | Refers to the moon. |
| Solar | Energy derived from the sun. |
| Eclipse | Occurs when one object in space comes between the sun and a third object which then casts a shadow on that object. |
| Tides | The rise and fall of the oceans surface which result from the pull of the Moon's and Sun's gravity on Earth. Happens about every 12.5 hours. |
| Latitude | A measurement of distance from the equator, expressed in degrees North and South. |
| Model | To make something to represent an object or event. |
| Circular | Round: having a circular shape. |
| Elliptical | Egg-shaped: rounded like an egg. |
| Satellite | Man-made equipment that orbits around the earth or the moon. |
| Celestial | Of or relating to the sky. |
| North Star | The brightest star in Ursa Minor, located at the end of the handle of the Little Dipper. |
| Mars | 4th planet from the Sun, the "Red Planet" is named after the Roman god of war because it commonly appears bright reddish when viewed in our sky. |
| Venus | The 2nd-closest planet to the Sun. Known as sister planet to Earth. Named after the Roman goddess of love and beauty. |
| Earth | 3rd planet from the Sun, the fifth-largest most massive, and most dense of the four rocky planets. Sometimes referred to as the World or Blue Planet. |
| Neptune | The 8th planet from the sun known as the Blue Giant. This planet is the fourth and outermost of the gas giant planets. |
| Uranus | Third largest planet in the solar system; a Gas Giant and is the seventh planet from the sun. |
| Saturn | The second most massive planet, with the most spectacular ring system. The rings of this planet are much more elaborate than those of any of the other gas giants. |
| Mercury | This planet is closest to the sun and covered with craters - this planet is about the size of the Earth's moon. |
| Jupiter | The 5th closest planet to the sun, this large gas planet has clouds that change colors daily. This planet is made mostly of hydrogen and helium gases. |
| Year | The 365.25 days it takes for the Earth to rotate around the sun. |
| Winter Solstice | The Earth's North Pole is tilted farthest away from the sun's light, which gives us a longer night and shorter day. |
| Summer Solstice | The Earth's North Pole is tilted towards the Sun. The days become much longer and the nights are shorter. |
| Equinox | About halfway through the solstices, day and night come in equal amounts of time - day and night are "equal." |
| Outer Planets | Composed of gas, these planets are Jupiter, Saturn, Uranus and Neptune. |
| Inner Planets | Composed of rock, these planets are Mercury, Venus, Earth, and Mars. |
| Autumnal Equinox | Occurs in September and marks the beginning of fall in the Northern Hemisphere - September 22. |
| Vernal Equinox | Occurs in March and marks the beginning of Spring in the Northern Hemisphere - March 21st. |
| Solar Eclipse | When the moon passes between Earth and the Sun, blocking the sunlight from reaching the Earth. This causes the moon's shadow to hit the Earth. |
| Lunar Eclipse | Occurs at a full moon when Earth is directly between the moon and the sun. During this type of eclipse, the Earth's shadow falls on the moon. |
Created by:
salleyj
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