oce 1001 chap 9 Questions with Correct Answers (Grade A+)
Question 1: It is Wednesday, and you are planning a fishing trip for this coming Saturday. You have
heard that fishing is best at your chosen spot when the ebb current begins to flow, so you wish to start
fishing at high tide. You do not have a tide table, but you have noted that today's high tide was at 1:10
p.m. At what time on Saturday should you plan to arrive and start fishing?
Answer: 3:40 p.m.
Question 2: A proxigean tide occurs when __________.
Answer: the Moon is at perigee at a time of syzygy
Question 3: Which of the following statements about tides in a simple tidal bulge model is/are true?
Choose all that apply.
Answer: -Spring tides result from constructive interference between the solar and lunar tidal bulges. -Tides
are greatest when the Moon is at perigee and Earth is at perihelion. -Neap tides result from destructive
interference between the solar and lunar tidal bulges. -A lunar or solar eclipse can occur only when the
Moon is in syzygy.
Question 4: The diagram below shows the position of the Earth-Moon-Sun system during spring tide
conditions. Match the correct letters to the following items.
Answer: B: New moon (closest to sun) A: Solar tidal bulge (top Earth) D: Full Moon (furthest from sun) C:
Lunar tidal bulge (bottom Earth)
Question 5: The diagram below shows the position of the Earth-Moon-Sun system during neap tide
conditions. Match the correct letters to the following items.
Answer: C: Lunar tidal bulges (bottom of Earth) D: First-quarter moon (above Earth) B: Thirdor last-quarter
moon (below Earth) A: Solar tidal bulges (top of Earth)
Question 6: The image below shows the various positions of the Moon as it orbits Earth (north polar
view). Correctly match the letters with the corresponding phases of the Moon.
Answer: D: Waxing gibbous (top left from Earth) B: Waxing crescent (top right from Earth) C: Waning
crescent (bottom right from Earth) D: Waning gibbous (bottom left from Earth)
Question 7: This image depicts the orbital relationships of the Sun, the Moon, and Earth. Match the
correct letters to the following positions of the Moon and Earth.
Answer: A: Apogee (left of Earth) D: Aphelion (left of sun) B: Perihelion (right of sun) C: Perigee (right of
Earth)
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Question 1: It is Wednesday, and you are planning a fishing trip for this coming Saturday. You have
heard that fishing is best at your chosen spot when the ebb current begins to flow, so you wish to start
fishing at high tide. You do not have a tide table, but you have noted that today's high tide was at 1:10
p.m. At what time on Saturday should you plan to arrive and start fishing?
Answer: 3:40 p.m.
Question 2: A proxigean tide occurs when __________.
Answer: the Moon is at perigee at a time of syzygy
Question 3: Which of the following statements about tides in a simple tidal bulge model is/are true?
Choose all that apply.
Answer: -Spring tides result from constructive interference between the solar and lunar tidal bulges. -Tides
are greatest when the Moon is at perigee and Earth is at perihelion. -Neap tides result from destructive
interference between the solar and lunar tidal bulges. -A lunar or solar eclipse can occur only when the
Moon is in syzygy.
Question 4: The diagram below shows the position of the Earth-Moon-Sun system during spring tide
conditions. Match the correct letters to the following items.
Answer: B: New moon (closest to sun) A: Solar tidal bulge (top Earth) D: Full Moon (furthest from sun) C:
Lunar tidal bulge (bottom Earth)
Question 5: The diagram below shows the position of the Earth-Moon-Sun system during neap tide
conditions. Match the correct letters to the following items.
Answer: C: Lunar tidal bulges (bottom of Earth) D: First-quarter moon (above Earth) B: Thirdor last-quarter
moon (below Earth) A: Solar tidal bulges (top of Earth)
Question 6: The image below shows the various positions of the Moon as it orbits Earth (north polar
view). Correctly match the letters with the corresponding phases of the Moon.
Answer: D: Waxing gibbous (top left from Earth) B: Waxing crescent (top right from Earth) C: Waning
crescent (bottom right from Earth) D: Waning gibbous (bottom left from Earth)
Question 7: This image depicts the orbital relationships of the Sun, the Moon, and Earth. Match the
correct letters to the following positions of the Moon and Earth.
Answer: A: Apogee (left of Earth) D: Aphelion (left of sun) B: Perihelion (right of sun) C: Perigee (right of
Earth)
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