Earth,Moon,andSunStudyGuide
Define:
1. Revolution:
a. Period of revolution
b. Days for Earth to make one complete revolution
c. One revolution = one ________
d. Leap year – extra day is added to which month ________
2. Rotation:
a. One rotation = one _______
b. Causes _________________ and ___________________
3. Equator:
4. Inertia:
5. Gravity:
a. 2 Factors that affect the force of gravity between two objects in space
i. the __________ of each object
ii. the ___________ between the objects
b. Has the strongest gravitational field
Astronomers (Scientists)
1. Earth was at the center of the solar system and the orbits were circular
shaped _____________________
2. Earth was at the center of the solar system and the orbits were elliptical
shaped ____________________
3. Had the correct theory about how the solar system is arranged
________________
4. Believed that the sun was the center of the solar system and the orbits were
circular shaped _______________________
Earth’s Unique Properties
1. percentage of the Earth is water _________
2. oceans and lakes
3. 2 main gases that make up most of the Earth’s
atmosphere
a. ______________________
b. ______________________
4. Figure to the right shows the Earths _______________ field
Earth,Moon,andSunStudyGuide
Seasons in the Northern Hemisphere
The Earth has seasons because ____________ of the Earth’s axis and the
_____________________ of the Earth around the Sun.
The Earth is tilted at an angle of _______________.
1. Autumn
a. Autumnal Equinox ________
b. What is tilted toward Sun?
c. Length of day/night hours?
2. Winter
a. Winter Solstice __________
b. What is tilted toward Sun?
c. Length of day/night hours?
3. Spring
a. Vernal Equinox _________
b. What is tilted toward Sun?
c. Length of day/night hours?
4. Summer
a. Summer Solstice __________
b. What is tilted toward Sun?
c. Length of day/night hours?
Tides
1. The main cause of the tides on Earth?
2. The cycle of tides is _____________
a. Daily –
b. Spring tide
i. Moon Phases
ii. angle
c. Neap tide
i. Moon Phases
ii. angle
Earth,Moon,andSunStudyGuide
Moon Phases
Identify the 8 phases
1. ____________
a. eclipse ________
2. ____________
3. ____________
4. ____________
5. ____________
a. eclipse _________
6. ____________
7. ____________
a. Last quarter
b. Half moon
8. ____________
The phases of the moon, eclipses, and tides are caused by _________
________________________________________________________.