Ques: Q: What results when gas particles rebound off the walls of their container? Read this paragraph and choose the correct option from the provided answers: Pressure is what results when gas particles rebound off the walls of their container. The basic unit of pressure is the newton per square meter (N/m2). This combined unit is redefined as a pascal (Pa). One pascal is not a very large amount of pressure. A more useful unit of pressure is the bar, which is 100,000 Pa (1 bar = 100,000 Pa). Other common units of pressure are the atmosphere (atm), which was originally defined as the average pressure of Earth's atmosphere at sea level; and mmHg (millimeters of mercury), which is the pressure generated by a column of mercury 1 mm high. The unit millimeters of mercury is also called a torr, named after the Italian scientist Evangelista Torricelli, who invented the barometer in the mid1600s. A more precise definition of atmosphere, in terms of torr, is that there are exactly 760 torr in 1 atm. A bar equals 1.01325 atm. Given all the relationships between these pressure units, the ability to convert from one pressure unit to another is a useful skill. Choices: - light - pull - weight - pressure A:
Ans: pressure

Ques: Q: When did new plants start sprouting after the forest fire? Read this paragraph and choose the correct option from the provided answers: Secondary Succession. Two months after a forest fire, new plants are already sprouting among the charred logs. Choices: - five months later - two weeks later - two days later - two months later A:
Ans: two months later

Ques: Q: Mount kilimanjaro has ________ climates at the top and bottom? Read this paragraph and choose the correct option from the provided answers: Mount Kilimanjaro has very different climates at the top and bottom. Choices: - dangerous - similar - rainy - different A:
Ans: different

Ques: Q: Around 97% of all water on earth is what type of water? Read this paragraph and choose the correct option from the provided answers: The Water Cycle Water is essential for all living processes. The human body is more than one-half water and human cells are more than 70 percent water. Thus, most land animals need a supply of fresh water to survive. Of the stores of water on Earth, 97.5 percent is salt water (Figure 20.9). Of the remaining water, 99 percent is locked as underground water or ice. Thus, less than one percent of fresh water is present in lakes and rivers. Many living things are dependent on this small amount of surface fresh water supply, a lack of which can have important effects on ecosystem dynamics. Humans, of course, have developed technologies to increase water availability, such as digging wells to harvest groundwater, storing rainwater, and using desalination to obtain drinkable water from the ocean. Although this pursuit of drinkable water has been ongoing throughout human history, the supply of fresh water continues to be a major issue in modern times. Choices: - excess water - fresh water - rivers water - salt water A:
Ans:
salt water