Answer the following question given this paragraph: Our Sun is a star. This star provides light and heat and supports almost all life on Earth. The Sun is the center of the solar system. It is by far the largest part of the solar system. Added together, all of the planets make up just 0.2 percent of the solar system's mass. The Sun makes up the remaining 99.8 percent of all the mass in the solar system ( Figure below )!. Q: What is the largest body in the solar system? Choices: - earth - asteroids - planet - sun A:
sun
(Question)
Answer the following question given this paragraph: Q: What type of invertebrate typically has a single spiraled shell? Choices: - bipod - arthropod - anthropod - gastropod A:
(Answer)
gastropod
Ques: Answer the following question given this paragraph: Dislocations, Deformations, and Work Hardening Inserting an extra plane of atoms into a crystal lattice produces an edge dislocation. A familiar example of an edge dislocation occurs when an ear of corn contains an extra row of kernels between the other rows (). An edge dislocation in a crystal causes the planes of atoms in the lattice to deform where the extra plane of atoms begins (). The edge dislocation frequently determines whether the entire solid will deform and fail under stress. Deformation occurs when a dislocation moves through a crystal. To illustrate the process, suppose you have a heavy rug that is lying a few inches off-center on a nonskid pad. To move the rug to its proper place, you could pick up one end and pull it. Because of the large area of contact between the rug and the pad, however, they will probably move as a unit. Alternatively, you could pick up the rug and try to set it back down exactly where you want it, but that requires a great deal of effort (and probably at least one extra person). An easier solution is to create a small wrinkle at one end of the rug (an edge dislocation) and gradually push the wrinkle across, resulting in a net movement of the rug as a whole (part (a) in ). Moving the wrinkle requires only a small amount of energy because only a small part of the rug is actually moving at any one time. Similarly, in a solid, the contacts between layers are broken in only one place at a time, which facilitates the deformation process. Saylor URL: http://www. saylor. org/books. Q: Inserting an extra plane of atoms into a crystal lattice produces what? Choices: - spot location - spot dislocation - edge location - edge dislocation A:
Ans: edge dislocation
(Q).
Answer the following question given this paragraph: For an endothermic chemical reaction, energy is absorbed as reactants are converted to products. Exothermic and endothermic reactions can be thought of as having energy as either a product of the reaction or a reactant. Exothermic reactions give off energy, so energy is a product. Endothermic reactions require energy, so energy is a reactant. Q: Energy is absorbed as reactants are converted to products in what kind of chemical reaction? Choices: - anaphoric - hydrostatic - synthesis - endothermic A:
(A).
endothermic
Ques:Answer the following question given this paragraph: Materials that have high resistance to electric current are called electric insulators . Examples include most nonmetallic solids, such as wood, rubber, and plastic. Their atoms hold onto their electrons tightly, so electric current cannot flow freely through them. Dry air is also an electric insulator. You can learn more about electric insulatorsas well as how to test whether a material is an insulatorby doing the activity at this URL:. Q: What do you call materials that have high resistance to electric current? Choices: - conductors - semiconductors - destructive insulators - electric insulators A:

Ans:electric insulators
Question: Answer the following question given this paragraph: Molecular compounds are inorganic compounds that take the form of discrete molecules . Examples include such familiar substance as water (H 2 O) and carbon dioxide (CO 2 ). These compounds are very different from ionic compounds like sodium chloride (NaCl). Ionic compounds are formed when metal atoms lose one or more of their electrons to nonmetal atoms. The resulting cations and anions are electrostatically attracted to each other. Q: What are inorganic compounds that take the form of discrete molecules called? Choices: - magnetic compounds - ionic compounds - functional compounds - molecular compounds A:
Answer:
molecular compounds