Earth's Rotation
Earth's Revolution
Eccentricity
Solar System Models
Random
100
Earth's rate of rotation is __________ per hour
15 degrees
100
The point in Earth's orbit when it is farthest from the sun is
Aphelion
100
Which orbit is more eccentric?
Orbit B
100
Sun centered model
Heliocentric
100
What causes the apparent diameter of the sun (as seen from Earth) to change?
Distance
200
What happens to the rate of Earth's rotation as it moves closer to the sun?
Nothing, Earth's rate of rotation does not change
200
Approximately how many degrees per day does Earth revolve in its orbit around the sun?
about 1 degree per day (365 days)
200
Which planet's orbit is more eccentric: Mars or Venus?
Mars
200
In which model does the moon orbit Earth?
Both
200
The longest solar day on Earth occurs in this month.
January
300
Why do objects appear to curve to the right in the Northern Hemisphere?
The Coriolis Effect (Earth's Rotation)
300
As its distance from the sun increases, a planet's period of revolution __________________
increases
300
The distance between the sun and a 2nd focus point is 3 million km. The distance from the aphelion to the perihelion is 60 million km. What is the orbit's eccentricity?
0.05
300
Which model is this?
Geocentric
300
Occurs when Earth is closest in its orbit to an outer planet, and that planet appears to reverse direction
Retrograde Motion
400
If a gun is fired due West in the Northern Hemisphere, the bullet's path will appear to curve in which compass direction?
North
400
As it's distance from the sun decreases, Earth's orbital velocity __________________
increases
400
Which model best represents Earth's actual orbit?
Orbit A
400
In which model do the stars orbit the sun?
Neither
400
Foucault's pendulum is evidence of what?
Earth's rotation
500
What happens to the rate of change in a pendulum's swing as it moves toward the equator?
Decreases
500
On what date is Earth's distance from the sun the least?
Is this point perihelion or aphelion?
January 4th
Perihelion
500
The focal distance of a planet's orbit is 6 million miles. The distance along the major axis is 65 million miles. Which planet in our solar system is this most likely to be?
Mars
500
What is the problem with both solar system models?
Orbits are circular
500
Which planet's diameter is approximately 10 times the diameter of Venus?
Saturn