根据第三段"Quicksand is denser than the human body.This means that humans will naturally float in quicksand!" (流沙比人的密度大。这就意味着人将自然地漂浮在流沙里。)可知,人漂浮在流沙里的原因是流沙比人的密度大。故选C。(4)B.主旨大意题。根据第二段"The truth is that it is very rare to ...
Sludge is a thick, wet slurry formed from a range of industrial processes, while the slurry is a mixture of solids that is denser than water suspended in liquids. Sludge and slurry can be defined as outcomes of industrial processes. They share many differences, from their texture to their co...
Why is shampoo more viscous than water?Adhesion and cohesion:The adhesion is the attraction between two unlike molecules whereas cohesion is the attraction between two like molecules.The property of cohesion is responsible for what is called as surface tension....
Swimming doesn’t create pressure on the body because it takes place in water, where we are mostly buoyant, eliminating the stress and shock that comes from exercise like running or jumping rope. By utilizing the resistance of the water (which 800x denser than air), we extend the arms, le...
Why does the high specific heat of water have to do with convection currents in the air at the seashore? Why is shampoo more viscous than water? What is the nature of waves produced in a lake? Is it due to an explosion inside the lake? Why do objects float in liquids denser...
Mixing clay (small particle sizes) with sand (large particle sizes) yields a soil that is heavier and denser than either soil alone, with even less pore space and poorer aeration. If your clay soil is low in organic matter and you have vegetable and flower beds, it makes sense to amend...
Raspberries are a member of the Rosaceae, or climbed, plant family. Like roses, most raspberries have sharp thorns on their canes. Raspberry shrubs are similar than blackberries, but rather than the sole, sharp thorns on blackberry canes, raspberry thorns tend to be denser creating a “fuzzy”...
They are both made from clay, but ceramic contains sand and water. The type of clay used for porcelain products is denser, making it the more durable option. The sturdiness of porcelain makes it a better option also because it can withstand heavy traffic. It is also more resistant to wear...
Circulating Ocean Water: In the ocean, the deeper you go, the colder is the water. This is because cold water is denser than warm water, and it sinks as its temperature drops. Ocean water circulates around continuously because of these temperature changes and because of the winds that blow...
In most compounds, the solid phase is denser than the liquid phase. Why isn't this true for water? Consider the following phase diagram. What phases are present at points A through H? Identify the triple point, normal boiling point, normal freezing point, and critical point. Which phase is...