Answer the following question given this paragraph: Subarctic climates are found between 60 and 70 north latitude. Much of Canada and Alaska have this type of climate. Summers are cool and short. Winters are very cold and long. Little precipitation falls, and most of it falls during the summer. Conifer forests grow in this climate ( Figure below ). Q: Exemplified by canada and alaska, what kind of climate has cool, short summers and long, cold winters, little precipitation, and abundant conifers? Choices: - temperate climate - droughts climate - tropical climate - subarctic climate A:
subarctic climate
(Question)
Answer the following question given this paragraph: Breathing is the process of moving air into and out of the lungs. It depends on the muscle called the diaphragm. Q: What muscle is imperative to breathing in helping the air move in and out of the lungs? Choices: - uterus - spleen - kidneys - diaphragm A:
(Answer)
diaphragm
Ques: Answer the following question given this paragraph: Gases are compressible, meaning that when put under high pressure, the particles are forced closer to one another. This decreases the amount of empty space and reduces the volume of the gas. Gas volume is also affected by temperature. When a gas is heated, its molecules move faster and the gas expands. Because of the variation in gas volume due to pressure and temperature changes, the comparison of gas volumes must be done at one standard temperature and pressure. Standard temperature and pressure (STP) is defined as 0C (273.15 K) and 1 atm pressure. The molar volume of a gas is the volume of one mole of a gas at STP. At STP, one mole (6.02 10 23 representative particles) of any gas occupies a volume of 22.4 L ( Figure below ). Q: How do molecules react when a gas is heated? Choices: - they move slower - they disintegrate - they explode - they move faster A:
Ans: they move faster
(Q).
Answer the following question given this paragraph: Direction is just as important as distance in describing motion. For example, if Mia told a friend how to reach the post office from her house, she couldn't just say, "go 3 kilometers. " The friend might end up at the park instead of the post office. Mia would have to be more specific. She could say, "go west for 2 kilometers and then go north for 1 kilometer. " When both distance and direction are considered, motion is a vector. A vector is a quantity that includes both size and direction. A vector is represented by an arrow. The length of the arrow represents distance. The way the arrow points shows direction. The red arrows in Figure above are vectors for Mia's route to the school and post office. If you want to learn more about vectors, watch the videos at these URLs:. Q: When describing motion, what factor is just as important as distance? Choices: - momentum - velocity - pressure - direction A:
(A).
direction
Ques:Answer the following question given this paragraph: Beta () decay is a more complicated process. Unlike the -emission, which simply expels a particle, the -emission involves the transformation of a neutron in the nucleus to a proton and an electron. The electron is then ejected from the nucleus. In the process, the atomic number increases by one while the atomic weight stays the same. As is the case with -emissions, -emissions are often accompanied by -radiation. Q: How does the atomic number change during beta emission? Choices: - stays the same - increases by two - decreases by one - increases by one A:

Ans:increases by one
Question: Answer the following question given this paragraph: PV = nRT This equation is known as the ideal gas law. An ideal gas is defined as a hypothetical gaseous substance whose behavior is independent of attractive and repulsive forces and can be completely described by the ideal gas law. In reality, there is no such thing as an ideal gas, but an ideal gas is a useful conceptual model that allows us to understand how gases respond to changing conditions. As we shall see, under many conditions, most real gases exhibit behavior that closely approximates that of an ideal gas. The ideal gas law can therefore be used to predict the behavior of real gases under most conditions. As you will learn in Section 10.8 "The Behavior of Real Gases", the ideal gas law does not work well at very low temperatures or very high pressures, where deviations from ideal behavior are most commonly observed. Q: The important equation pv = nrt holds true for substances in what state of matter? Choices: - solids - liquids - products - gas A:
Answer:
gas