Science Test Word Scramble
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Term | Definition |
Astronomy | Study of moons, stars, and other objects in space |
Axis | Imaginary line that passes through Earth's center and the North and South poles- 23.5 |
Rotation | Spinning of Earth on its axis- causes day and night- 24 hours |
Revolution | Movement of one object around another- causes seasons- 365.25 days |
Orbit | Earth path that it follows as it revolves around the sun |
Calendar | System of organizing time that defines the beginning, length, and divisions of years |
Solstice | When the sun is farthest north or south of the equator and happens twice a year |
Equinox | When the moon is directly overhead the equator and happens twice a year and neither hemisphere is tilted toward or away from the sun |
Force | Push or pull |
Gravity | Attracts all objects toward each other |
Law of universal gravitation | States that every object in the universe attracts every other object |
Mass | Amount of matter in one object |
Weight | Force of gravity on an object |
Inertia | Tendency of an object to resist a change in motion |
Newton's first law of inertia | An object at rest tends to stay at rest while an object in motion tends to stay in motion |
Inertia and gravity | Combine to keep Earth in orbit around the sun and the moon in orbit around the Earth |
Mass of the object and distance between them | Two objects that the strength of the force of gravity between two objects depends on |
Axis is tilted as it revolves around the sun | Why Earth has seasons |
Rotation and revolution | Two major ways that Earth moves through space |
Summer solstice | June 21- northern hemisphere tilted towards sun |
Winter solstice | December 21- southern hemisphere tilted towards sun |
Fall equinox | September 21- neither hemisphere tilted towards sun |
Spring (vernal) equinox | March 21- neither hemisphere tilted towards sun |
Fall and spring | All hemispheres get equal amount of sun- 12 hours of sun |
Elliptical orbit | Earth's oval orbit around sun |
Phases | Different shapes of the moon that you see from Earth |
Eclipse | When an object in space comes between the sun and a third object, it cast a shadow on that object |
Solar eclipse | Occurs when a new moon blocks your view of the sun |
Umbra | Very darkest part of the moons shadow- cone-shaped |
Penumbra | Large part of the shadow |
Lunar eclipse | Occurs at a full moon when Earth is directly between the moon and the sun |
Tides | Rise and fall of of ocean water that occurs very 12.5 hours |
Spring tide | Combined forces produce a tide with greatest differences between consecutive low and high tides |
Neap tide | Tide with least amount of difference between consecutive low and high tides |
New Moon | Sunlit side faces away from Earth-1 |
Waxing Crescent | Portion of the moon you can see is growing into a crescent shape-2 |
First Quarter | Can see half of the sunlit side of the moon-3 |
Waxing Gibbous | Moon continues to grow- visible shape of moon is called gibbous- 4 |
Full Moon | Entire sunlit side faces Earth-5 |
Waning Gibbous | Portion of moon you can see shrinks-6 |
Third Quarter | See half of moons lit side-7 |
Waning Crescent | See a crescent again-8 |
Phases of the moon | New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Third Quarter, Waning Crescent |
Tides are caused | By differences in how much the moon's gravity pulls on different parts of the Earth |
What solar eclipses are | When moon passes directly between Earth and the sun, blocking sunlight from Earth |
What lunar eclipses are | Earth blocks sunlight from reaching the moon |
Telescope | Device built to observe distant objects by making them appear closer |
Maria | Moons surface's dark flat areas- means seas |
Craters | Large round pits |
Meteoroids | Chunks of rock or dust from space |
The moon formed | A planet-sized object collided with Earth |
Created by:
efinney
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