Earth-Moon System Quiz

The diagram below represents a model of the Earth-Moon system as viewed looking down upon the North Pole. The numbers 1 through 8 represent positions of the Moon as it revolves around the Earth. The parts of the diagram lettered A through D show how the Moon’s phases look to an observer in Florida. An observer in Florida sees a crescent phase of the moon, as shown. At which position is the Moon when the crescent is observed?

• Position 2

• Position 4

• Position 6

• Position 8

The difference between a scientific theory and other theories is that a scientific theory is supported by evidence and widely accepted. Which of the statements below is the best example of a scientific theory?

• The theory that all animals are unhappy in the zoo, led to a study

• Dr. Leslie has a theory that it will rain tomorrow

• A theory states if lightning strikes, then thunder will follow within 2 minutes

• A group of astronomers show support to the theory that the universe is expanding.

The diagram below represents a model of the Moon in different positions as it revolves around the Earth, as viewed looking down upon the North Pole. Which image correctly represents the Moon at position 1?

• New Moon

• Full Moon

• Waxing Crescent

• Waning Crescent

Diagram 1 shows the Moon in its orbit at four positions labeled A, B, C, and D. Diagram 2 shows a phase of the Moon as viewed from Florida. At which labeled Moon position would the phase of the Moon shown in diagram 2 be observed from Florida?

• A

• B

• C

• D

The diagram below shows the Moon, the Earth, and the Sun’s rays as viewed from space. Letter A indicates a certain position of the Moon in its orbit. Which diagram represents the phase of the Moon, as seen by an observer on Earth, when the Moon is located at position A in its orbit?

• New Moon

• Full Moon

• Waxing Gibbous

• Waning Gibbous

The image below shows the relative positions of the Moon, Earth, and Sun. Which of the following would most likely occur based on the positioning of the Moon, Earth, and Sun?

• Lunar Eclipse

• Solar Eclipse

• Third Quarter

• First Quarter

The diagram below shows the Moon at four positions in its orbit around Earth. At what positions would the Moon need to be in for an observer on Earth to never see an eclipse?

• 3 and 4

• 1 and 2

• 1 and 3

• 2 and 4

The diagram below shows the relative positions of the Sun, Moon, and Earth when an eclipse was observed from Earth. Positions A and B are locations on Earth’s surface. Which statement correctly describes the type of eclipse that was occurring and the position on Earth where this eclipse was observed?

• A lunar eclipse was observed from position A

• A lunar eclipse was observed from position B

• A solar eclipse was observed from position A

• A solar eclipse was observed from position B

The diagram below represents Earth at four different positions A, B, C, and D in its orbit around the Sun. At which position is it summer in the Northern Hemisphere?

• A

• B

• C

• D

The diagram below represents the Earth on a given day as it revolves around the sun. Which date is represented by the diagram? (Shaded)

• March 21

• June 21

• September 21

• December 21