Forces in Solar System & Ancient Theories
Movement of our Planet and Moon
Our Seasons
Our Moon
100
This theory states that Earth is at the center of the solar system and all objects revolve around Earth.
What is the Geocentric Theory?
100
Earth spinning on it's axis.
What is a rotation?
100
These are caused by the combination of Earth's rotation on a titled axis while it revolves around the sun.
What are the 4 seasons?
100
This is the reason we see the moon differently throughout a given month.
What is the position of the moon changes as it revolves around Earth, changing the amount of sunlight that reflects off its surface?
200
This is the tendency of a moving object to keep moving or a still object to remain still until a force acts upon it.
What is inertia?
200
This is how long it takes for Earth to make one rotation.
What is 24 hours?
200
What season does each letter represent (for Northern Hemisphere) on the diagram
D- Spring
C- Winter
B- Fall
A- Summer
200
The phase of the moon at letter A.
What is New moon?
300
This theory states that the sun is at the center of the solar system and all objects revolve around the sun.
What is the Heliocentric Theory?
300
The rotation of Earth causes us to experience this.
What is day and night?
300
Occurs on June 21st and causes longer days (sunlight) as the sun's rays hit more directly on the N. Hemisphere.
What is the summer solstice?
300
The phase of the moon at letter C.
What is 1st Quarter?
400
This is the attractive force between 2 objects.
What is gravity?
400
The Earth moving along its orbit around the sun.
What is a revolution?
400
Occurs on December 21st and causes shorter days (sunlight) as the sun's rays hit the N. Hemisphere indirectly.
What is the winter solstice?
400
The phase of the moon at letter B.
What is Waxing Crescent?
500
How do the forces of gravity and inertial work together to keep Earth and other objects in motion around the sun.
Gravity keeps Earth on its orbital path while inertia keeps the Earth continuously moving around the sun.
500
It takes the Earth this many days to make one revolution around the sun.
What is 365 & 1/4 days?
500
Occurs around March 21st and causes equal amounts of day and night (light and darkness).
What is the spring (vernal) equinox?
500
This phase of the moon is represented at letter H.
What is Waning Crescent?
600
The tilt of Earth's axis causes us to experience these
What our 4 seasons?
600
Occurs around September 21st and causes equal amount of day and night (light and darkness).
What is the fall (autumnal) equinox?
600
This phase of the moon is represented at letter G.
What is 3rd Quarter?
700
We experience this every 4 years because it takes 365 & 1/4 days for Earth to fully revolve and after 4 years the 1/4 days add up to a full extra day
What is a leap year?
700
This phase of the moon is represented at letter F.
What is Waning Gibbous?
800
This phase of the moon is represented at letter E.
What is Full Moon?
900
This phase of the moon is represented at letter D.
What is Waxing Gibbous?