Weather Review The layer of the atmosphere where most weather takes place is… a. b. c. d. The mesosphere The thermosphere The stratosphere The troposphere d. The troposphere The troposphere is the layer of the atmosphere closest to the Earth. This is where most weather takes place. What is the instrument that measures the amount of water vapor in the air? a. b. c. d. Anemometer Barometer Hygrometer Thermometer c. Hygrometer The amount of water vapor in the air is the humidity. The hygrometer measures how humid the air is. What instrument measures air pressure? a. b. c. d. Thermometer Hygrometer Anemometer Barometer d. Barometer Think about the barometer demonstration in class where the barometer was in a cup and we added pressure to the top. As we pushed down on the rubber top, the air pressure increased and you were able to see the arrow on the barometer move. The barometer was measuring the amount of air pressure in the cup. What instrument shows wind direction? a. b. c. d. Wind vane Anemometer Barometer Hygrometer a. Wind vane Think about the wind vane that we made in class. You can use the wind vane to determine which direction the wind is coming from. This is why all wind vanes have North, South, East, and West labeled. What instrument is used to measure some kinds of precipitation? a. b. c. d. Anemometer Rain gauge Barometer Hygrometer b. Rain gauge Remember our discussion about rain gauges. These are the tools that many of your families have outside to measure how much rain has fallen. What instrument is used to measure wind speed? a. b. c. d. Wind vane Barometer Anemometer Hygrometer c. Anemometer Remember the anemometer is the tool that has the cups that spin in the air. As the wind blows the cups start spinning. The faster the cups spin, the faster the wind is blowing. What instrument is used to measure temperature? a. b. c. d. Barometer Hygrometer Thermometer Rain gauge c. Thermometer Think about our discussions in math and science about thermometers. The thermometers are used to measure the temperature of the air around us. What is the movement of air called? a. b. c. d. Wind Wind vane Weather A storm a. Wind Wind is the movement of air. You can create wind by blowing out air. As you blow out air the air around you has to move, too. This is an example of wind. The state of the atmosphere at a certain place and time is… a. b. c. d. Troposphere Wind Front Weather d. Weather Weather is the state of the atmosphere at a certain place and time. Think about how the weather is different from one place to the next. The weather we are experiencing in Bellevue today is different from the weather they are experiencing in Florida. What is the boundary between two air masses called? a. b. c. d. Wind Weather Front Troposphere c. Front Think about our discussion on cold and warm fronts. When the two air masses meet, a front is formed. This is what brings the changes in weather. Which is not a weather instrument? a. b. c. d. Satellite Stethoscope Weather balloon Radar b. Stethoscope A stethoscope is not a weather instrument. A stethoscope is used by a doctor to check your breathing, which is not related to weather. Two temperature scales are… a. b. c. d. Cumulus and Cirrus Beaufort and Celsius Stratus and Fahrenheit Fahrenheit and Celsius d. Fahrenheit and Celsius Remember our discussions about temperature in math and science. Fahrenheit is the temperature scale we use in America. Celsius is the temperature scale used in many other countries. Snow, rain, sleet, and hail are all examples of ________. a. b. c. d. Evaporation Condensation Precipitation Weather fronts c. Precipitation Remember our discussions about the water cycle. Water falling from the sky is precipitation. Rain, hail, sleet, and snow are all examples of precipitation. Stratus clouds are… a. b. c. d. Low and layered High, wispy, and curled Fluffy, big, and piled up Whirling and funnel-shaped a. Low and layered Think about the cloud examples that we made with cotton balls. The stratus clouds were low and had many layers. Clouds form when water vapor changes to water droplets in the air. What is this process called? a. b. c. d. Precipitation Evaporation Water cycle Condensation d. Condensation Think about our discussions of the water cycle. Clouds are created as the water vapor changes to water droplets. Remember, condensation and clouds both start with the letter c! What is used to estimate wind speed? a. b. c. d. A barometer A hygrometer The Beaufort scale A thermometer c. The Beaufort scale Think about the handout with the pictures of the effects of wind. This was an example of the Beaufort scale. This scale is used to estimate the speed of wind. Air pressure is measured in… a. b. c. d. Millibars Degrees Miles per hour Feet a. Millibars Think about the barometers we looked at. The air pressure is measured in millibars. What is the movement of water on, above, and below Earth’s surface called? a. b. c. d. Seasons Precipitation Water Cycle Weather c. Water Cycle Remember the diagram we made of the water cycle. The water moves from land to the air and then back to land. What two things about wind do weather forecasters measure? a. b. c. d. Pressure and temperature Speed and humidity Temperature and humidity Speed and direction d. Speed and direction Remember our discussion of the different instruments. The only two that are used to measure wind are the anemometer and the wind vane. The anemometer measures the speed and the wind vane measures the direction. What is the name for the scientists that study weather? a. b. c. d. Meteorologist Ecologist Geologist Paleontologist a. Meteorologist Think about the page in your science book that discusses meteorologists. These scientists study the weather and help predict what is going to happen next in the weather. What kind of precipitation would you have if the temperature was 18oF? a. b. c. d. Rain Sleet Hail Snow d. Snow If water freezes at 32oF, then it will be snowing. What kind of pressure system would create sunny, cloudless days? a. Low pressure b. High pressure b. High pressure Remember our discussion about air pressure. High pressure usually means sunny skies. Think high = hot. When it is hot out the sun is usually shining. What tool do you use to measure rain? a. b. c. d. Snow board Ruler Anemometer Rain gauge d. Rain gauge What tool do you use to measure snow? a. b. c. d. Anemometer Rain gauge Snow board Hygrometer c. Snow board A snow board is used to measure how much snow has fallen. Why does the Earth never run out of rain? We never run out of rain because of the water cycle. Water is constantly moving through the stages of the water cycle (evaporation, condensation, precipitation). Who was Gabriel Fahrenheit? Gabriel Fahrenheit was the scientist who invented the Fahrenheit temperature scale. In the Fahrenheit scale water freezes at 32o and boils at 212o. Who was Anders Celsius? Anders Celsius was the scientist who developed the Celsius temperature scale. In the Celsius scale water freezes at 0o and boils at 100o. Who was Sir Francis Beaufort? Sir Francis Beaufort created a wind scale to measure wind strength. Good luck on your test!