Explain why putting a dented Ping-Pong ball in a pot of boiling water will help remove the dent
What will be an ideal response?
As air inside the ball is heated, it expands and pushes outward on the dented ball. Often a dented Ping-Pong ball can be put back in a rounded shape this way.
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Air pollution problems seldom occur when winds are weak or calm
Indicate whether the statement is true or false
A formal region is defined by a limited number of related characteristics. For example, the Sahel region of Africa is a d esert area characterized by specific climate, vegetation, and land use patterns.
In tropical rainforests, vegetation layers are structured according to
a. how deep the rainfall penetrates into the forest b. the plant's needs for sunlight c. how well each plant handles predation by herbivores d. nutrient availability and uptake by plant roots e. tropical rainforests are not layered
The ________ class of clouds is characterized by substantial vertical development
Fill in the blank(s) with the appropriate word(s).