Select the be answer on the answer sheet. Please do not make any marks on this te. 1. Weather is be defined as the A. changes that occur in cloud formations from day to day. B. amount of rain or snow that falls in a day. C. occurrence of earthquakes, tornadoes, and other disaers. D. condition of Earth s atmosphere at a given time and place. 2. Meteorologis are mo intereed in udying the because that is where weather happens. A. exosphere B. troposphere C. mesosphere D. ratosphere 3. The atmosphere is be defined as the A. layer of gases surrounding Earth. B. name for the shape of the planet Earth. C. smoke and air pollution over a city. D. weather condition in a rain fore. 4. A molecule of water is A. another name for a raindrop. B. the smalle particle of matter that could ill be called water. C. the volume of water that has a mass of 1 gram. D. what water is called when it is under the ground. 5. Which atement below is true? A. Gas molecules are in conant motion, but molecules in liquids and solids are not. B. Gas and liquid molecules are in conant motion, but molecules in solids are not. C. Molecules in all matter are always in conant motion. D. Molecules are not in motion unless some force moves them. 6. Days are hotter at the equator than at the poles because A. the equator is the thicke part of the Earth. B. more direct light shines on the equator. C. more indirect light shines on the equator. D. the equator is closer to the sun. 7. The solar angle is important to consider when discussing A. the time it takes light to reach Earth from the Sun. B. why the North Star is always at the same point in the night sky. C. why the year is approximately 365 days long. D. how much solar energy falls on different parts of Earth s surface. 1 Trimeer C A M S Page 1
Select the be answer on the answer sheet. Please do not make any marks on this te. 8. We measure volume to find A. the weight of an object. B. the space occupied by an object. C. the length of an object measured in millimeters. D. how much matter there is in an object. 9. Where is mo (97%) of Earth s water found? A. Lakes B. Rivers C. Oceans D. Glaciers 10. At the beach, a breeze blows from the ocean when air pressure over the sea is A. greater than air pressure over the land. B. the same as air pressure over the land. C. less than air pressure over the land. D. rising at the same rate as air pressure over the land. 11. Wind moves from areas of A. high pressure to areas of low pressure. B. high humidity to areas of low humidity. C. low pressure to areas of high pressure. D. low humidity to areas of high humidity. 12. The basic cause of wind is the A. evaporation of water from the ocean. B. differential heating of Earth by the Sun. C. rotation of Earth on its axis. D. condensation of water vapor that falls as precipitation. 13. Sometimes weather forecaers talk about cold fronts and warm fronts when they describe how the weather is changing. A front is be defined as A. the beginning of a orm that brings rong winds and heavy rain. B. a boundary that separates air masses with different moiure content and temperatures. C. an imaginary line that shows the location of different convection cells. D. the location in which two clouds collide, causing lightning. 14. In a discussion of density, the term mass means A. a large amount or number. B. how much something weighs. C. how much space an object occupies. D. the amount of matter that makes up an object. 1 Trimeer C A M S Page 2
Select the be answer on the answer sheet. Please do not make any marks on this te. 15. Why doesn t the Earth run out of rain? A. It is frequently cloudy. B. Water is conantly evaporating to form clouds. C. Mo of Earth s water is in the oceans. D. Air masses are in conant motion. 16. One hot, sunny day Sally left two containers out in the sun, one filled with water and one filled with soil. Both the water and the soil had the same temperature. After fifteen minutes, Sally observed that the soil was warmer than the water, as shown in the diagram below. This happened because the A. soil received more sunlight than the water. B. water takes less energy to heat than the soil. C. water is more dense than the soil. D. water and soil heat at different rates. 1 Trimeer C A M S Page 3
Select the be answer on the answer sheet. Please do not make any marks on this te. 17. Which of the following would be the be model to demonrate the water cycle? A. A light shines on an aquarium covered with glass, and water droplets form on the inside of the glass. B. A light shines on a closed cardboard box containing a plant. C. A light shines on a man's face. Droplets of sweat form on his face as he exercises. D. A light shines on a glass of iced tea. Water droplets form on the outside of the glass. 1 Trimeer C A M S Page 4
Select the be answer on the answer sheet. Please do not make any marks on this te. 18. Sometimes a layer of fog, one to four meters deep, is seen next to the ground with clear air above it. Part of an explanation for this layering is that the A. clear air is colder than the fog layer. B. clear air is more humid than the fog layer. C. fog layer is next to warm ground or soil. D. fog layer is more dense than the clear air. 19. Students are udying density effects. They have a tank of clear water. They use a syringe and a tube to slowly add salt water with blue food coloring to the bottom of the tank, as shown by the diagram at the right. The salt water and the water in the tank are the same temperature. Which is the be prediction of what will happen next? A. Blobs of blue-colored salt water float to the top of the clear water. B. The blue-colored salt water forms a layer at the bottom of the tank. C. The blue-colored salt water flows to the top of the clear water and forms a layer there. D. The blue-colored salt water quickly begins to mix with the clear water. Blue-colored Salt Solution Clear Water 20. A udent makes the following measurements. Fir, a balloon is inflated with an air pump. The mass of the inflated balloon is measured with an electronic balance. Then, the balloon is deflated and the mass of the empty balloon is measured. The mass of the inflated balloon is A. higher because of the additional mass of air. B. higher because the deflated balloon is pushed down by the atmosphere. C. lower because the inflated balloon tends to float. D. lower because the additional air is less dense than the balloon material. 1 Trimeer C A M S Page 5
Select the be answer on the answer sheet. Please do not make any marks on this te. Queions 21 to 23: On a humid summer day with little wind, the following observations are made at the times shown. The observations are for the air over a large field where the dark soil is heated by the sun. The field is surrounded by a fore that is much larger than the field. Time Temperature at Ground Level Sunlight on Field Air Above Field Air Above Fore 6:00 am 15 C (60 F) fully lit, low angle clear clear 8:00 am 21 C (70 F fully lit, medium small cumulus clouds, angle bottoms at 2,000 m clear 10:00 am 32 C (90 F) fully lit, high angle large cumulus clouds, bottoms at 2,000 m clear 21. The air over the field gets warmer because A. the sunlight heats the air above the soil by radiation. B. the sunlight heats the soil and the air is warmed by heat conduction. C. it catches sunlight reflected by soil particles. D. it draws heat from the fore and the fore ays cool. 22. Think about the air above the field. Which atement explains the observations? A. As the air is warmed, it expands and causes a high pressure area to form at the ground. B. The warming air over the field expands, pushes into the fore, and warms the air there. C. As the air is warmed, it becomes less dense and rises as cooler air moves in to replace it. D. The dark soil absorbs heat from the air above it and as that air cools, water begins to condense so clouds form. 23. Which is the be explanation for the cloud formation above the field? A. At higher altitudes the air is cooler, so clouds form naturally. B. Warm air, rising above the field, cools as it rises and, when it cools below the dew point, clouds form. C. The dark soil absorbs heat from the air above it and as that air cools, water begins to condense so clouds form. D. Cumulus clouds are often seen forming on sunny, humid summer days. 1 Trimeer C A M S Page 6
Select the be answer on the answer sheet. Please do not make any marks on this te. 24. If you hear a weather report that shows cold, dry air over mo of the middle of the United States, you would expect that the air A. has been in place for several days and has cooled. B. came from the Pacific Ocean, off California, and flowed over the dry Southweern United States. C. came from Alaska and the Arctic and flowed over Canada. D. came from the Gulf of Mexico and flowed in over Texas and Louisiana. 25. If a hot, dry air mass ayed over New Jersey and the Atlantic coa for several days, you would expect the weather to be A. rainless and hot. B. rainy and hot. C. rainless and cooling. D. gathering clouds and cooling. 1 Trimeer C A M S Page 7