Answer the following question given this paragraph: The various emissions will differ considerably in their ability to go through matter, known as their penetrating ability . The -particle has the least penetrating power since it is the largest and slowest emission. It can be blocked by a sheet of paper or a human hand. Beta particles are more penetrating than alpha particles, but can be stopped by a thin sheet of aluminum. Of the three basic types of emissions, gamma particle are the most penetrating. A thick lead shield is required to stop gamma emissions. Positrons represent a special case in that they annihilate when they come in contact with electrons. The collision of a positron and an electron results in the formation of two gamma emissions that go 180 degrees away from each other. Q: Of the three basic types of radioactive emissions, what particle is the most penetrating? Choices: - neutron - alpha - beta - gamma A:
gamma
(Question)
Answer the following question given this paragraph: In the last lesson, we studied the characteristics of liquids and solids at a macroscopic level and at the molecular level. Increasing the temperature of a solid transforms the particles from a rigid arrangement to a fluid (a liquid or gas). Conversely, decreasing the temperature of a liquid or gas slows the particles down, going back from free movement to a fixed arrangement. In this section, we will further explore how temperature and pressure affect the characteristics and behavior of matter. Pressure has a larger effect on gases, which are very compressible, than liquids and solids. However, changes in pressure are still relevant to solids and liquids. For example, Figure above shows ice skates on ice. Because your entire weight is all concentrated on a thin blade, ice skates exert quite a bit of pressure on the ice below them. An interesting property of water is that increasing the pressure on its solid form (ice) will eventually convert it to liquid water. The pressure exerted by ice skates makes small amounts of liquid water on the surface, allowing the skates to glide smoothly. Q: What needs to be increased to change a solid into a liquid or gas? Choices: - volume - oxygen - pressure - temperature A:
(Answer)
temperature
Ques: Answer the following question given this paragraph: Ocean currents transfer heat from the Equator toward the poles. This moderates Earth's temperature. Q: Ocean currents transfer heat from the equator towards what locations? Choices: - continents - tropical zones - east and west - poles A:
Ans: poles
(Q).
Answer the following question given this paragraph: Making healthy lifestyle choices can help prevent some types of cancer. For example, you can reduce your risk of lung cancer by not smoking. You can reduce your risk of skin cancer by using sunscreen (see Figure below ). Q: Choosing to not smoke and using sunscreen are examples of lifestyle choices that help prevent forms of what disease? Choices: - pnemonia - bacterial disease - viral disease - cancer A:
(A).
cancer
Ques:Answer the following question given this paragraph: Q: What are passed from one generation to the next so species can survive? Choices: - selections - mutations - fluctuations - adaptatioins A:

Ans:adaptatioins
Ques:Answer the following question given this paragraph: Q: What prevents solutes that have accumulated in the xylem from leaking back into the soil solution? Choices: - the exoskeleton - the exodermis - the altostratus - the endodermis A:

Ans:
the endodermis