Moon
Sun
Solar System
Earth
Earth's Motions
100

How many days are required for the Moon to complete a cycle of phases from one full Moon phase to the next?

29.5 days.

100

Most of the energy in the Earth's atmosphere comes from...

radiation from the Earth and insolation from the Sun

100

The average temperature of planets does what when increasing in distance to the Sun?

Decreases with greater distance from the Sun.

100

The orbiting motion of the Earth is best described as...

revolution.

100

The best evidence for Earth's rotation is...

the Focault Pendulum. 

200

The same side of the Moon will always be visible to the observer because of...

the Moon's rotation on its axis is similar to its orbit around Earth. (The period of revolution and period of rotation are the same).

200

As seen from New York State, the noon Sun is...

never directly overhead.

200

Which member of the solar system has a diameter of 3.48 x 10^3 kilometers? 

Earth's Moon.

200

The Earth has fewer impact crater than Mercury because of the...

destruction of meteorites in the Earth's upper atmosphere.

200

The motion of a Foucault pendulum provides evidence that Earth...

spins on its axis.

300

Compared to the density of terrestrial and Jovian planets, the density of the Moon is...

higher than Jovian planets and lower than terrestrial planets.

300

To a observer located at the Equator, on which date would the Sun appear to be directly overhead at noon.

The equinoxes ( September 21 and March 21)

300

The planets known as "gas giants" include Jupiter, Uranus and...

Saturn.

300

The actual shape of the Earth's orbit around the Sun is best described as...

An ellipse. (0.017)

300

The tilt of the Earth on its axis is a cause of the Earth's...

seasons.

400

Eclipses do NOT occur each time that the Moon revolves around Earth because the Moon's...

the orbit of the moon is tilted relative to the orbit of the Earth around the Sun.

400

A student in New York State observed that the altitude of the Sun at noon is decreasing each day. During which month could the student have made these observations?

October.

400

Which planet's orbital shape (eccentricity) would be most similar to Jupiter's orbital shape (eccentricity)?

Uranus (0.047)

400

The Earth reaches its greatest orbital speed when its...

distance from the sun decreases in winter. (Perihelion)

400

Major ocean and air currents appear to curve to the right in the Northern Hemisphere because...

Earth rotates on its axis.

500

At which two Moon phases will the difference in height between high tide and low tide most likely be the greatest.

Full Moon and New Moon.

500

At noon on which date would the observer cast the longest shadow?

December 21st

500

Compared to Jupiter and Saturn, Venus and Mars have greater...

higher densities

longer rotation at the equator

shorter periods of revolution

500

A comparison of the age of Earth obtained from radioactive dating and the age of the universe based on galactic Doppler shifts suggest that...

the solar system and Earth formed billions of years after the universe began.

500

The apparent change in direction of a Foucault pendulum is caused by...

the perspective of the observer.