Vocab

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Heliocentric Chapter 2-2 Section 1 Having the sun as the center
Ellipse Chapter 2-2 Section 1 An ovular shape
Inertia Chapter 2-2 Section 1 To continue moving in a straight line for eternity
Gailileo Chapter 2-2 Section 1 The man to create the first telescope, and find four moons around jupiter that begn the thought of "heliocentric" solar system
Nuclear Fusion Chapter 2-2 Section 2 The process by which hydrogen atoms join together to form helium, releasing energy.
Photosphere Chapter 2-2 Section 2 The inner layer of the sun's atmosphere
Chromosphere Chapter 2-2 Section 2 The middle layer of the suns atmosphere
Corona Chapter 2-2 Section 2 The outer layer of the sun's atmosphere
Sun spots Chapter 2-2 Section 2 A dark area of gas on the sun that is cooler than surrounding gases
Solar Wind Chapter 2-2 Section 2 A stream of electrically charged particles produced by the suns corona
Prominence Chapter 2-2 Section 2 A loop of gas that protrudes from the suns surface, linking parts of a sunspot region
Solar flare Chapter 2-2 Section 2 An explosion of hydrogen gas from the sun's surface that occurs when loops in sunspot regions suddenly connect
Terrestrial Planets Chapter 2-2 Section 3 The name given to the four inner planets; Mercury Venus Earth Mars
Mercury Chapter 2-2 Section 3 The innermost and smallest planet in the ssolar system. Orbits the sun in about 88 earth days.
Venus Chapter 2-2 Section 3 The second planet from the sun, Orbits the sun every 225 earth days. "Evening" and "Morning" star
Mars Chapter 2-2 Section 3 4th planet from the sun. Named after roman god of war. Second smallest planet. "The Red Planet"
Gas Giants Chapter 2-2 Section 4 The name given to the first four outer planets; Jupiter Saturn Uranus Neptune
Jupiter Chapter 2-2 Section 4 5th plnet from the sun. Most massive planet in the solar system.
Saturn Chapter 2-2 Section 4 2nd largest planet. 6th planet from the sun.
Uraanus Chapter 2-2 Section 4 4x the size of earth. 7th planet from the sun.
Neptune Chapter 2-2 Section 4 Named after roman god of sea. Blue. Last Planet in our solar system.
Comet Chapter 2-2 Section 5 A ball of ice and dust whos orbit is usually a long narrow ellipse.
Asteroid Chapter 2-2 Section 5 Objects revolving around the sun that are too small and too numerous to be considered as planets.
Meteoroid Chapter 2-2 Section 5 A chunk of rock or dust in space.
Astronomy Chapter 1-2 Section 1 The study of the moon, starts, and other objects in space.
Axis Chapter 1-2 Section 1 An imaginaryAn imaginary Line that passes through earth on which it rotates.
Rotation Chapter 1-2 Section 1 The spinning motion of a planet about its axis
Revolution Chapter 1-2 Section 1 The movement of an object around another object
Orbit Chapter 1-2 Section 1 The path of an object as it revolves around another object in space.
Solstice Chapter 1-2 Section 1 The two days of the year in which the noon sun is directly overhead at 23.5 degrees north or south.
Autumnal Equinox Chapter 1-2 Section 1 The day of the year that marks the beginning of fall in the northern hemisphere
vernal Equinox Chapter 1-2 Section 1 The day of the year that marks the beginning of spring in the northern hemisphere
phases Chapter 1-2 Section 2 one of the different shapes of the moon as seen from earth
solar eclipse Chapter 1-2 Section 2 the blocking of sunlight to earth that occurs when the moon is between the sun and earth.
lunar eclipse Chapter 1-2 Section 2 the blocking of sunlight to the moon that occurs when the earth is between the moon and sun
umbra Chapter 1-2 Section 2 the darkest part of the shadow
penumbra Chapter 1-2 Section 2 the part of a shadow that surrounds the umbra 9darkest part)
spring tide Chapter 1-2 Section 2 A tide with the greatest distance between low and high tides.
neap tide Chapter 1-2 Section 2 a tide with the least difference between low and high tides.
satellite Chapter 1-2 Section 3 any object that revolves around another object in space 9natural or artificial)
geosynchronous orbit Chapter 1-2 Section 3 the orbit of a satellite that revolves around earth at the same rate that earth rotates.
telescope Chapter 1-2 Section 4 A device built to study distant objects by making them appear closer
craters Chapter 1-2 Section 4 a round pit on a planets surface
maria Chapter 1-2 Section 4 dark flat regions on the moon's (or other planets') surface
Em spectrum Chapter 2-1 Section 1 the range of wavelengths in which electromagnetic radiation extends.
Radiation Chapter 2-1 Section 1 The energy that comes from a source (the sun)and travels through space to meet another object (earth)
Infrared radiation Chapter 2-1 Section 1 Electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
ultraviolet radiation Chapter 2-1 Section 1 electromagnetic radiation with wavelengths shorter than visible light but longer than X-rayse
greenhouse effect Chapter 2-1 Section 1 the trapping of heat in the earths atmosphere
visible light Chapter 2-1 Section 1 electromagnetic radiation that can produce a visual sensation
wavelength Chapter 2-1 Section 1 the distance between two waves
hydrologic cycle Chapter 2-1 Section 4 the continuos movement of water
rain gauge Chapter 2-1 Section 5 a device for collecting and measuring the amount of water that falls

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