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Chapter 6 – Water Cycle and Weather

Chapter 6 – Water Cycle and Weather. 4 th Grade – Kristi Goggans Earth Science – Unit B. Chapter 6 – Water Cycle and Weather. Think About It Question: How does Earth’s WATER AFFECT WEATHER?. Evaporation. The change from liquid water to water vapor. Condensation.

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Chapter 6 – Water Cycle and Weather

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  1. Chapter 6 – Water Cycle and Weather 4th Grade – Kristi Goggans Earth Science – Unit B

  2. Chapter 6 – Water Cycle and Weather Think About It Question: How does Earth’s WATER AFFECT WEATHER?

  3. Evaporation • The change from liquid water to water vapor

  4. Condensation • The process of water vapor, a gas, changing to a liquid

  5. Precipitation • Any form of water falling from the air to Earth’s surface

  6. Humidity • The amount of water vapor in the air

  7. Front • The boundary across which two different air masses touch another

  8. Meteorologist • A scientist who studies and measures weather conditions

  9. Barometer • A tool that measures air pressure

  10. Anemometer • A tool that measures wind speed

  11. Wind Vane • A tool that shows the direction from which the wind is blowing

  12. How much of Earth’s surface is water? • 3/4 • 1/2 • 1/3

  13. Contrast the water in oceans with fresh water. • Ocean water is warmer than fresh water • Fresh water has dissolved minerals and oceans do not • Oceans are salty and fresh water is not

  14. Why is the Baltic Sea less salty than other seas? • Deserts surround the Baltic Sea • Many rivers flow into the Baltic Sea • The Baltic Sea is in a warm place

  15. What is the Sun’s role in the water cycle? • Water condenses when it is warmed by the Sun • The Sun makes water particles slow down • Water evaporates in the Sun’s warmth

  16. What happens when moist air rises? • The moist air is able to store even more water as it rises • The moist air cools, and the water vapor condenses into clouds • The moist air cools and is able to store more precipitation

  17. What is condensation? • Water Vapor becoming liquid water as it cools • Rain becoming ice when it cools • Ice becoming liquid water as it warms

  18. What do the curving lines on a weather map show? • Areas where high and low temperatures are • Areas where low pressure systems are • Fronts and how they are moving

  19. What best describes air? • A substance with no mass that contains water vapor • A force that surrounds Earth • The gases that surround Earth’s surface

  20. What happens to air when there is an area of lower pressure nearby? • Air that was moving comes to a standstill • The water vapor in the air becomes less dense • The air moves toward the area of low pressure

  21. Which of these will measure air pressure? • Barometer • Anemometer • Condensation

  22. What is humidity? • Air Pressure • How strong the wind is • The amount of water in the air

  23. Why do you often see clouds along a cold front? • The water vapor in the warm air mass cools and condenses into clouds • Clouds are left in the warm front • Cold air moves above the warm air to form clouds

  24. Which best describes stratus clouds? • Low-lying white clouds made of ice crystals • Clouds close to the ground that often bring rain or snow • High, white and puffy clouds that may appear in good weather

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