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Fourth Grade (Grade 4) Oceanography and Hydrology Questions

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Grade 4 Oceanography and Hydrology
Water taken from plants on Earth's surface into the air is called which of the following?
  1. evaporation
  2. transpiration
  3. condensation
Grade 4 Oceanography and Hydrology
When you see a spider web covered in dew in the morning, you are seeing                .
  1. precipitation
  2. condensation
  3. evaporation
Grade 4 Oceanography and Hydrology
Condensation is the part of water cycle that creates clouds in the sky.
  1. True
  2. False
Grade 4 Oceanography and Hydrology
Ninety-seven percent of the world's water resources are found in
  1. fresh water.
  2. salt water.
  3. groundwater.
Grade 4 Oceanography and Hydrology
When water particles cool and change from a gas (water vapor) back to a liquid, this is called                .
  1. evaporation
  2. condensation
  3. precipitation
Grade 4 Oceanography and Hydrology
Evaporation is water that moves downward into the ground.
  1. True
  2. False
Grade 4 Oceanography and Hydrology
Wind causes an up-and-down movement of ocean water, called a                   .
  1. deep ocean current
  2. tide
  3. surface current
  4. wave
Grade 4 Oceanography and Hydrology
The Sun's energy changes lake water into a water vapor. What step in the water cycle is this?
  1. Condensation
  2. Precipitation
  3. Evaporation
Grade 4 Oceanography and Hydrology
The map shows the Atlantic Ocean. It also shows the continents it borders.
Map of the Atlantic
Which statement best describes continents and oceans?
  1. all continents are surrounded by oceans
  2. some continents are surrounded by oceans
  3. continents are not surrounded by oceans
Grade 4 Oceanography and Hydrology
The Sun starts the water cycle.
  1. True
  2. False
Grade 4 Oceanography and Hydrology
The stage where water drops bond and fall to Earth's surface is called                .
  1. condensation
  2. precipitation
  3. evaporation
  4. runoff
Grade 4 Oceanography and Hydrology
Ocean water is a mixture of water and many                .
  1. gases
  2. salts
  3. liquids
  4. fluids
Grade 4 Oceanography and Hydrology
The water flowing in the river changes the land. It wears away rock. The water moves sand from one place to another. Which of the following would cause the greatest increase in the rate the river water changes the land?
Meandering River
  1. The water moves faster.
  2. The water moves slower.
  3. The water temperature increases.
  4. The water temperature decreases.
Grade 4 Oceanography and Hydrology
The pull of                 on Earth is the main reason for tides.
  1. the Moon
  2. winds
  3. the Sun
  4. currents
Grade 4 Oceanography and Hydrology
A large stream of water that flows downhill across land.
  1. river
  2. ocean
  3. pool
  4. lake
Grade 4 Oceanography and Hydrology
All of the following natural processes on Earth recycle water, except for
  1. groundwater.
  2. precipitation.
  3. runoff.
  4. evaporation.
Grade 4 Oceanography and Hydrology
Water flows downhill. As the water flows downhill, it moves pieces of rock to new locations. This is an example of erosion. Which location would most likely have the faster rate of erosion?
  1. water flowing down a small hill
  2. water flowing down a steep mountain
Grade 4 Oceanography and Hydrology
A tsunami is a series of large, fast-moving ocean waves. A tsunami is often caused by an earthquake in the ocean floor. At first, tsunami waves may not appear dangerous. They may pass under a ship floating on the ocean and go unnoticed by the crew. This is because the distance between waves can be many miles long. The wave may only be a few feet high in the deep ocean waters. As the tsunami travels over the shallow ocean floor approaching land, its height grows and speed slows. The waves then collapse upon the land, flooding the low-lying coast. Tsunami waves may be ten, fifty, or even a hundred feet high when they make landfall. Multiple waves crash along the coast as the tsunami makes impact. These waves may come minutes or even hours apart.

Which of the following will most likely lower the risk of harm to people in areas where tsunamis may hit land?
  1. Sound warning sirens when the first tsunami wave makes landfall.
  2. Monitor for ocean floor earthquakes and warn people to move to high ground.
  3. Use sandbags to build low walls along shorelines where tsunamis may hit land.
  4. Ask crews of ships at sea to report any changes in wave height or wave speed.
Grade 4 Oceanography and Hydrology
About what fraction of Earth's surface is covered with water?
  1. [math]3/4[/math]
  2. [math]4/5[/math]
  3. [math]2/3[/math]
Grade 4 Oceanography and Hydrology
Which is caused by density differences?
  1. surface currents
  2. ocean waves
  3. deep ocean currents
  4. ocean tides
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