Investigating The Weather - 4th Grade Science Test - Thursday, October 27, 2011

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| By JasminesMomma
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Investigating The Weather - 4th Grade Science Test - Thursday, October 27, 2011 - Quiz


I've tried to pack as much information into this quiz as possible. All of the information I used to make the questions came from the Study Guide given by teachers. I hope this helps!


Questions and Answers
  • 1. 

    Data is _______ .

    Explanation
    Data refers to raw facts, figures, or statistics that have no meaning or context on their own. On the other hand, information is processed and organized data that provides meaning and context. Therefore, the correct answer is "information" because it is the result of analyzing and interpreting data.

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  • 2. 

    A ________ is a collection of tiny water drops or ice crystals in the air.

    Explanation
    A cloud is formed when water vapor in the air condenses into tiny water droplets or ice crystals. These droplets or crystals come together to form a visible collection of suspended moisture in the atmosphere, known as a cloud. Clouds can vary in size, shape, and altitude, and they play a crucial role in the Earth's weather and climate systems.

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  • 3. 

    Scientists classify clouds into _____ (number) main types based on how and where they form.

    Explanation
    Scientists classify clouds into three main types based on how and where they form. Clouds can form in three different ways: through convection, where warm air rises and cools, causing water vapor to condense and form clouds; through orographic lifting, where air is forced to rise over mountains or hills, leading to cloud formation; and through frontal lifting, where warm and cold air masses collide, causing the warm air to rise and form clouds. These three processes give rise to the three main types of clouds: cumulus, stratus, and cirrus.

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  • 4. 

    _________ clouds are thin, feathery clouds that form high in the sky. They are made of tiny bits of ice, and rain does not fall from them. When these clouds become puffy, a storm may be on the way.

    Explanation
    Cirrus clouds are thin and feathery clouds that form at high altitudes. They are composed of tiny ice particles and do not produce rain. When these clouds start to become puffy, it indicates the possibility of an approaching storm.

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  • 5. 

    ________ clouds are puffy white clouds. They look like cotton balls. They are made of tiny bits of liquid water. These clouds usually indicate fair weather. If they grow upward and dark, a storm may soon come.

    Explanation
    Cumulus clouds are puffy white clouds that resemble cotton balls and are composed of tiny droplets of liquid water. These clouds are typically associated with fair weather. However, if they start to grow vertically and darken, it is an indication that a storm may be approaching.

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  • 6. 

    ________ clouds are flat layers of clouds. They look like a blanket that can cover most of the sky. They sometimes bring days of light, steady rain. These clouds are often the lowest clouds in the sky.

    Explanation
    Stratus clouds are flat layers of clouds that resemble a blanket covering most of the sky. They are often the lowest clouds in the sky and can bring days of light, steady rain.

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  • 7. 

    A _________ forms over warm ocean water. The warmer the water, the stronger the winds can become.

    Explanation
    A hurricane forms over warm ocean water because warm water provides the necessary energy and moisture for the development and intensification of tropical cyclones. As the water temperature increases, it increases the evaporation rate, leading to the formation of a large area of low pressure. This low pressure system, combined with the Earth's rotation, causes air to spiral inward, creating a rotating storm with strong winds. Therefore, the warmer the water, the more energy is available for the hurricane to strengthen and produce stronger winds.

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  • 8. 

    _________ usually form quickly. Huge sparks called lightening heat the air. This causes the loud booming sound.

    Explanation
    Thunderstorms usually form quickly due to the rapid heating of the air caused by huge sparks called lightning. This intense heating creates a disturbance in the atmosphere, resulting in the loud booming sound commonly associated with thunderstorms.

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  • 9. 

    A  ________ is a rotating column of air that reaches toward the ground. This type of storm may spin from the most violent thunderstorms.

    Explanation
    A tornado is a rotating column of air that reaches toward the ground. It is formed from the most violent thunderstorms.

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  • 10. 

    Mississippi had ____ (number) tornadoes in 2008 - a state record.

    Explanation
    The answer to the question is 109. This number represents the total count of tornadoes that occurred in Mississippi in the year 2008. It is stated that this number is a state record, indicating that it is the highest number of tornadoes ever recorded in Mississippi for a single year.

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  • 11. 

    A _________ is a storm with lots of snow, cold temperatures, and strong winds. It buries roads, cars, and buildings under snow.

    Explanation
    A blizzard is a severe winter storm characterized by heavy snowfall, freezing temperatures, and strong winds. During a blizzard, the snow accumulates rapidly, making it difficult to travel and causing roads, cars, and buildings to be covered in snow. The combination of cold temperatures and strong winds creates blizzard conditions, which can be dangerous and often result in reduced visibility and extreme cold.

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  • 12. 

    There are two blanks in this question but only one answer, which fills both blanks. __________ describes how hot or cold something is. When the Sun's energy heats Earth's surface,, the surface warms the air above it. The air _________ rises.

    Explanation
    Temperature describes how hot or cold something is. When the Sun's energy heats Earth's surface, the surface warms the air above it. The air temperature rises.

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  • 13. 

    The weight of air is called ____ ________ .

    Explanation
    The weight of air is called air pressure. Air pressure refers to the force exerted by the weight of the air molecules in the Earth's atmosphere. It is the measure of the force per unit area exerted on a surface by the weight of the air above it. Air pressure decreases with increasing altitude, as there are fewer air molecules above. It is an important factor in weather patterns and affects various aspects of our daily lives.

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  • 14. 

    Which weighs more... Cool air or warm air?

    Explanation
    Warm air weighs more than cool air because as air is heated, its molecules gain energy and move faster, causing them to spread out and take up more space. This increase in volume leads to a decrease in density, resulting in warm air being less dense than cool air. Therefore, warm air will weigh more than cool air due to its higher density.

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  • 15. 

    Moving air is called _____ .

    Explanation
    Moving air is called wind. Wind is the horizontal movement of air caused by differences in atmospheric pressure. It is created by the uneven heating of the Earth's surface by the sun, which causes air to rise and sink, creating areas of high and low pressure. As air moves from high pressure to low pressure, it creates wind. Wind plays a crucial role in weather patterns and can vary in speed and direction.

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  • 16. 

    ________ is a measure of how much moisture is in the air. In coastal areas and rain forests, this number would be higher. In the dessert, it would be low.

    Explanation
    Humidity is a measure of how much moisture is present in the air. In coastal areas and rain forests, where there is more water vapor, the humidity level would be higher. On the other hand, in desert regions where there is less moisture in the air, the humidity level would be low. Humidity is influenced by factors such as temperature, proximity to bodies of water, and precipitation levels.

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  • 17. 

    Any form of water that falls from clouds is _________ . The term includes rain, snow, sleet, and hail.

    Explanation
    Precipitation refers to any form of water that falls from clouds, including rain, snow, sleet, and hail. It is the process by which water vapor in the atmosphere condenses and becomes heavy enough to fall back to the Earth's surface. Precipitation is an essential part of the Earth's water cycle and plays a crucial role in replenishing freshwater resources on land.

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  • 18. 

    A large region of air with the same properties throughout is called an ___ ____ .

    Explanation
    An air mass refers to a large region of air that has consistent properties, such as temperature, humidity, and stability, throughout its extent. These air masses form and acquire their characteristics over specific source regions, which can be over land or water. As they move, they can influence the weather conditions in the areas they pass over, bringing changes in temperature, precipitation, and atmospheric stability. Therefore, an air mass is the correct term to describe a large region of air with uniform properties.

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  • 19. 

    A _____ causes a change in the weather.

    Explanation
    A front causes a change in the weather. Fronts occur when two air masses with different temperatures and humidity levels meet. This collision creates a boundary between the two air masses, leading to changes in weather conditions such as temperature, precipitation, and wind patterns. Fronts can be associated with the formation of clouds, thunderstorms, and other weather phenomena.

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