2 Read the passage and answer the question followed by it. Global warming increases the risk of flooding in certain areas, especially near the equator. Food and medicines packets are dropped by pushing padded boxes from air crafts or with the help of parachutes. 4,500 KG TRI In this case, four boxes were dropped from an aircraft at a place near the equator (as shown in fig). Nearby, at the same time and height an elephant runs off a cliff Which box will hit the ground last? Why? What will the mass of the elephant be if it was running off a cliff near the poles? The red box took 0.6 seconds to reach the ground, What is its speed on striking the ground?(g =10m s?) How high was the red box from the ground? b

What defines the mass number of an isotope? a. the sum of the neutrons and protons b. the sum of the neutrons and electrons c. the number of neutrons d. the number of protons

What elements are found in the inner and out core of the earth? the correct layers of earth's interior from the top to the center? what is the unwanted material that is removed from a mine called? how much stronger is an earthquake that registers 5 on the richter as opposed to 2? what occurs at a convergence plate boundary? the majority of the the earth's rock what is the most common element found in the earth's crust? what element is found in pyrite that contributes to acid mine drainage? why must mining companies post bond prior to permitting? how are bacteria being used in treating effluent from mines? what is a problem of acid mine drainage in rivers and soils? what do tectonic plates move on? why is gold smelting so damaging? how are artesian wells formed? where is dammed water colder than the river it flows into? what is one of the problems of uncontained aqueducts? what is the largest use of industrial water? underground sand and gravel formations that can store water? what type of water test measure acidity? which type of water test for cloudiness from suspended solids? what water test measures the amount of calcium and magnesium? these are all problems of coal power plants all of the following are advantages of riparian lands along rivers what type of water would be the warmest and have the least amount of dissolved oxygen? the zone of aeration is

The air that we breath is made mostly of which gaseous molecule