- 1. During the water cycle, when water vapor changes to liquid water, it is called
A) condensation
B) boiling
C) freezing
D) evaporation
- 2. The highest part of a wave is the
A) wave height
B) crest
C) wavelength
D) trough
- 3. Spring tides and neap tides occur in patterns governed by
A) the type of ocean currents near where the tides occur.
B) changes in the force of the Earth’s gravity.
C) the relative positions of the Earth, moon, and sun (the phases of the moon)
D) whether the gravity of the sun or moon exerts a stronger pull.
- 4. Which two physical changes are essential processes in the water cycle?
A) ebbing and flowing
B) mixing and separating
C) evaporation and condensation
D) oxidation and reduction
- 5. Which factor is MOST responsible for the ocean tides
A) Density differences in the water
B) The moon’s gravity
C) Earthquakes
D) The wind
- 6. Large waves, called ____, are different from surface waves and are usually caused by underwater earthquakes, volcanic eruptions and landslides.
A) Capillary waves
B) Swells
C) Tsunamis
D) Breakers
- 7. What is the MOST important factor affecting the movement of water in an ocean?
A) Tides
B) Molecules
C) Waves
D) Currents
- 8. Which statement BEST describes why warm ocean currents are usually surface currents?
A) Ocean water loses heat to the air at the surface.
B) Ocean tides bring warm water to the surface.
C) Warm water contains more salt than cold water.
D) Warm water is less dense than cold water.
- 9. ____ is the cause of most ocean surface currents.
A) Gravity
B) Earth's orbit
C) The wind
D) The moon
- 10. When the sun, moon and earth are all aligned, you have a
A) spring tide
B) low tide
C) high tide
D) neap tide
- 11. Water particles of ocean waves move ____.
A) sideways
B) toward shore
C) up and down
D) in circles
- 12. The difference between the level of the ocean at high tide and low tide is called ___.
A) the tidal range
B) a trough
C) a crest
D) a neap tide
- 13. The horizontal distance between the crests or troughs of two adjacent waves is called ___.
A) wave height
B) a breaker
C) tidal range
D) wavelength
- 14. In some places, vertical circulation in the ocean brings deep, cold water to the ocean surface. These ___ bring nutrients to the surface, resulting in good fishing areas.
A) density currents
B) upwellings
C) surface currents
D) tides
- 15. In a wave, only the ___ move(s) forward
A) deep water
B) energy
C) water particles
D) wind
- 16. The oceans originally formed from water vapor that condensed, fell as rain, and then collected in ____.
A) tidal bores
B) upwellings
C) crests
D) basins
- 17. When the Sun, the Moon and Earth form a right angle, we have ____ tides.
A) compressed
B) neap
C) high
D) spring
- 18. Compare and contrast spring tides and neap tides.
- 19. Explain why a knowledge of tides is important for people who live and work on the edge of a large body of water.
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