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1. an imaginary line that an object spins or revolves around
A
axis
B
cycle
C
phase
2. a process that repeats
A
position
B
cycle
C
rotate
3. the ability to do work or cause change; can be changed into different forms and can move between objects.
A
period
B
revolve
C
energy
4. waves of electromagnetic energy; electromagnetic energy that people can see.
A
sun
B
position
C
light
5. the circular path of an object as it revolves around another object
A
rotate
B
orbit
C
position
6. a length of time
A
season
B
period
C
position
7. the apparent shape of the lighted part of the moon that can be seen from Earth.
A
planet
B
position
C
phase
8. a large circular mass that revolves around a star
A
sun
B
planet
C
axis
9. a specific point in space
A
position
B
light
C
orbit
10. electromagnetic energy
A
light
B
rotate
C
radiation
11. to move around another object along a circular path, as in orbit
A
rotate
B
revolve
C
sundial
12. turning around on an axis; spinning
A
position
B
revolve
C
rotate
13. a period of the year determined by the position of Earth as it revolves around the sun
A
rotate
B
revolve
C
season
14. any star around which planets revolve
A
period
B
cycle
C
sun
15. a device that uses the position of the sun as it casts a shadow to measure time.
A
sundial
B
orbit
C
seasons