8th grade science:physical sceince
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| the pressure caused by the weight of the atmosphere | atmospheric pressure
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| a nonsolid state of matter in which atoms or molecules are free to move past each other, as in a gas or liquid | fluid
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| the amount of force exerted per unit area of a surface | pressure
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| the SI unit of pressure | pascal
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| the upward force that keeps an object immersed in or floating on a liquid | buoyant force
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| the principle that states that the buoyant force on an object in a fluid is an upward force equal to the weight of the volume of fluid that the object displaces | Archimedes' principle
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| the principle that states that the pressure in a fluid decreases as the fluid's velocity increases | Bernoulli's principle
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| which principle cam explain how a hydraulic device works | Pascals principle
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| which principle could you use to determine if an object will float in water | Archimedes principle
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| which principle can help explain how a bird flies | Bernoullis principle
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| what will happen if the buoyant on an object is greater than the weight of the object | the object will be pushed out of the fluid(buoyed up)
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| as a person climbs a mountain, the atmospheric pressure he or she feels will | decrease
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| a bicycle tire goes flat if it has a hole because the air inside the tire is | at a higher pressure than the air outside the tire
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| aluminum has a higher density than water, but an empty aluminum can floats in water.why does the can float | the air inside the can makes the overall density of the can less than the density of water
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| which of the following affect the flight of an airplane | drag,lift,thrust
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| how is lift created around the wing of an airplane | faster-moving air above the wing creates an area of low pressure above the wing
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| how does the water pressure change as you dive farther underwater | it increases
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| the SI unit for pressure is called______ and is equal to 1 N/m2 | Pascal
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| presssure can be calculated by dividing force by ______ | area
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| the upward force exerted by fluids on matter is called the ____________ | buoyant force
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| submarines and some fish can control their depth underwater by changing their________ | density
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| the upward force that keeps planes and birds aloft is called______ | lift
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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