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Science Language and Vocabulary ASTRONOMY. axis of rotation The spinning of objects around an imaginary center line.

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Presentation on theme: "Science Language and Vocabulary ASTRONOMY. axis of rotation The spinning of objects around an imaginary center line."— Presentation transcript:

1 Science Language and Vocabulary ASTRONOMY

2 axis of rotation The spinning of objects around an imaginary center line

3 orbit The path a planet or moon takes during its revolution

4 phases of the moon the different shapes of the moon during a lunar cycle

5 reflection the process of bouncing off

6 revolution the circling of an object in space around another object in space

7 Earth’s axis of rotation imaginary poles on which the Earth spins

8 Earth’s tilt 23.5° angle

9 asteroids irregular pieces of rock that move through space

10 celestial objects all of the different objects in space that make up our universe

11 comets celestial objects made up of dust, ice, and gases that orbit the sun in a large, elliptical course

12 distance the measure of the amount of space between objects

13 gravitational pull the measurement of the pull of gravity

14 gravity the attraction of one mass to another

15 mass the amount of matter in something

16 meteor one of the small particles of matter in the solar system that is visible when it falls into Earth’s atmosphere

17 planet a celestial object, larger than asteroids or comets, that revolves around a star without giving off its own light

18 satellite a natural or man made object that revolves around larger objects in space

19 scale objects compared to a standard for accurate size perception

20 solar system the system made up of the eight unique planet, and many smaller objects that orbit the sun

21 stars celestial objects that consist of gases which generate light and heat

22 sun the star that is the basis of the solar system and sustains life on Earth as the source of heat and light

23 telescope an instrument that magnifies or makes distant objects appear larger

24 constellation a pattern in the stars that has been identified and named

25 galaxy a group of millions of stars held together by gravity

26 light-years the distance light can travel in one year

27 Milky Way Galaxy a group of about 200 billion stars formed in a disk shaped spiral that contains our solar system

28 speed of light 186,000 miles per second or 300,000 kilometers per second

29 universe the space that consists of all matter and all light and other forms of radiation and energy


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