Solstice

1
Solstice

• Imaginary vertical line that cuts through the
  center of the Earth and around which Earth spins.

2
Axis

• Earths yearlong orbit around the Sun

3
Revolution

• For the Earth it is 23.5o. This is responsible
  for the different seasons

4
Tilt

• Twice yearly time (spring and fall) when the Sun
  is directly over the Equator and daylight night
  time

5
Equinox

• Spinning of Earth on its imaginary axis, which
  takes about 24 hours. Causes night and day.

6
Rotation

• Short period of climatic change in an area caused
  by the tilt of Earths axis.

7
Seasons

• Change in appearance of the Moon as viewed from
  Earth, due to the relative positions of the Moon,
  Earth, and the Sun.

8
Moon Phase

• Protons Neutrons

9
Mass Number

• Moon phases at which point the lighted side of
  the Moon can not be seen.

10
New Moon

• Describes phases following a new moon as more of
  the Moons lighted side becomes visible.

11
Waxing

• A variable that remains the same during an
  experiment

12
Constant

• Occurs when the Moon passes directly between the
  Sun and Earth and casts a shadow over part of
  Earth.

13
Solar Eclipse

• The factor that changes in an experiment

14
Independent Variable

• Occurs when Earths shadow falls on the Moon

15
Lunar Eclipse

• Describes phases that occur after a full moon, as
  the visible lighted side of the Moon grows
  smaller.

16
Waning

• Protons - Electrons

17
Charge

• A resource in an ecosystem that prevents the
  population from growing larger.

18
Limiting Factor

• The number of a species that an ecosystem can
  sustain with the resources it has available

19
Carrying Capacity

• The factor that is measured in an experiment

20
Dependent Variable

• Twice yearly point at which the Sun reaches its
  greatest distance north or south (longest and
  shortest day of the year)