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- 1. Multiple ChoiceWhich will most likely result from a low-pressure weather system?warm temperaturescloudy conditionsclear conditionscool temperatures
- 2. Multiple ChoiceWhich is the best explanation for how air masses move across the United States?The prevailing westerlies move air masses from west to east across the United States but may be deflected by the jet stream.The trade winds move air masses from west to east across the United States.The jet stream moves air masses from the Pacific Ocean across the United States.The warm air of the Gulf Stream causes air masses to move from the Atlantic Ocean to the Pacific Ocean.
- 3. Multiple ChoiceWhat is the cause of rising surface temperatures of the Pacific Ocean, drought in the western United States, and flooding on the Pacific coast of South America?the Gulf Streamthe jet streamEl NinoLa Nina
- 4. Multiple ChoiceWhich has the greatest effect of wind speed?precipitationcloud coverwind directionair pressure
- 5. Multiple ChoiceOn a cold, cloudy day, the local weather forecaster predicts that a high-pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area?stormysunnyrainysnowy
- 6. Multiple ChoiceIn a grassland ecosystem, if the population of eagles suddenly decreased, what will most likely be the effect on the rest of the ecosystem?The ecosystem will become overpopulated with snakes.There will be a decrease in the population of snakes in the ecosystem.The nutrition of the soil in the ecosystem will decreaseMore types of plants will begin growing in the ecosystem.
- 7. Multiple ChoiceWhich gets all its energy from the sun?consumerproducerdecomposerno living organism
- 8. Multiple ChoiceHow are lakes and estuaries similar?They both have salt water.They both have freshwater.They both are located in the same area.They are not the same.
- 9. Multiple ChoiceHow are the tropical rain forest and pond ecosystems similar?They both have large amounts of trees.They both have producers and consumers.They both have the same plants and animals.They are not the same at all.
- 10. Multiple ChoiceWhich ecosystem would most likely contain fish that can only survive in freshwater?lakeestuaryoceanouter space
- 11. Multiple ChoiceWhich is most responsible for the uneven heating of the air in the atmosphere?radiationconductionconvectioncondensation
- 12. Multiple ChoiceWhich best explains why a pan placed on a hot stove top will begin to warm?conductionconvectionradiationevaporation
- 13. Multiple ChoiceWater is being boiled on the stove. What is the change that is taking place?A solid is changing into a gas.A liquid is changing into a gasA solid is changing into a liquidThere is no change occuring
- 14. Multiple ChoiceWhich material is most likely to expand if exposed to freezing temperatures?ironwoodwaterplastic
- 15. Multiple ChoiceA ball was rolling fast and then slowed. Which most likelycaused the ball to slow?heatwindfrictionmomentum
- 16. Multiple ChoiceWhich statement best describes how winter weather can damage roads?Snow and ice can cause car accidents, which damage roads.Rain, ice, and snow can cause the painted lines on roads to fade.Cold temperatures can cause road materials to expand, creating potholes.Water can get into cracks in roads, then freeze and expand, making the cracks worse.
- 17. Multiple ChoiceWhich is true when equal and opposite forces are applied to an object?The forces combine.There is forward movement.There is no change in motion.The speed of the object increases.
- 18. Multiple ChoiceA train travels 150 miles in 2 hours. What is the average speed of the train? (average speed = distance ÷ time)30 miles per hour50 miles per hour75 miles per hour80 miles per hour
- 19. Multiple ChoiceWhich will most likely increase the speed of an object?applying a faster forceapplying a slower forceapplying a weaker forcerapplying a stronger force
- 20. Multiple ChoiceA car is moving at a constant speed. What is the speed of the car if it moves 100 miles in 2 hours? (speed = distance ÷ time)25 miles per hour50 miles per hour75 miles per hour100 miles per hour
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