Origins
Earth
Sun
Moon
Orbits
100
Cause for the annual changes in temperatures known as seasons
What is the tilt of Earth's axis of rotation?
100
The diminishing angle of sunlight approaching the poles results in higher temperatures in this region.
What is the equator?
200
Activity of the Universe implied by cosmic background radiation and galactic redshift
What is "expansion"?
200
The time it takes for Earth to complete one rotation
What is 24 hours?
200
The process by which living organisms harness solar energy.
What is photosynthesis?
200
The tides that occur on the side of Earth nearest and furthest from the Moon
What are high tides?
200
The center of mass between 2 orbiting bodies and the point around which they orbit.
What is the barycenter?
300
The galaxy our solar system is located in.
What is the Milky Way Galaxy?
300
The time it takes for Earth to complete one REVOLUTION
What is 365.25 days?
300
The reaction that produces the Sun's energy
What is a fusion reaction?
300
Moon phases associated with Neap Tides
What are first quarter and third quarter?
300
Law that states that planetary orbits are elliptical in shape.
What is Kepler's First Law?
400
Movement of galaxies A, B and C indicated by the spectral lines below.
What is "away?"
400
The reason Polaris won't always be the North Star
What is precession?
400
The form of energy transmitted from the Sun to Earth.
What is Electromagnetic radiation?
400
The small "nodding" of Earth's axis that has a cycle period of 18 years.
What is nutation?
400
According to Kepler's Second Law, the relationship between two areas swept out by a line joining a planet and the sun in 2 equal time intervals
What is "equal?"
500
Location on this diagram that would experience the longest period of daylight during one 24 hour period.
What is location D?
500
The season that would be experienced at position "C" in the diagram:
What is Fall?
500
Moon phases associated with Spring Tides.
What are full moon and new moon?
600
The seasons that correspond with Earth's position in order: A, C, E, G
What are spring, summer, fall, winter?