Which of the following materials would be the least efficient in soundproofing a room: clay tile, plaster, or perforated acoustic ceiling material? Be sure to use your knowledge of the coefficient of absorption in your explanation.

Which geographical feature, made or large treeless areas and tall grass, can be found in the Great Plains of the U. S.?

Which mountain ranges are part of the Appalachian Mountains? Great Smoky Mountains or Green Mountains or Sierra Madre Occidental or Sierra Madre Oriental or White Mountains?

Which of the following is a negative effect of the aswan high dam? a. silt is no longer carried down river b. floodwaters are controlled c. electricity is generated d. water is stored in reservoirs

for us to feel an earthquake on land it has to register as least or more on the richter scale

In earthquake the tract location where the fault slipped either near the surface or deep underground is

Earth is a closed system. that means the amount of rocks, metals, carbon, nitrogen, oxygen, and water on earth ___. so it is essential that bio geochemical cycles __ these materials as they move through earths subsystems A: remains constant.

What are the percentages of the large near Earth asteroids that we have found so far?

Name the lines of latitude that are labeled north of the equator what would be the next label after 75 degrees north

Why did the ancient Chinese believe that they were the center of the universe? O The arrival of traders from other lands made them an important civilization. O The people of ancient China lacked a basic education in world geography.

Distance that the transcontinental railroad covered from Omaha to San Francisco.