Answer the following question given this paragraph: Another example of transverse waves occurs with earthquakes. The disturbance that causes an earthquake sends transverse waves through underground rocks in all directions from the disturbance. Earthquake waves that travel this way are called secondary, or S, waves. An S wave is illustrated in Figure below . Q: Earthquake waves that travel trhough underground rocks in all directions are known as? Choices: - tertiary waves - primary waves - typical waves - secondary waves A:
secondary waves
Answer the following question given this paragraph: A three-prong plug is generally used on metal appliances. The two flat prongs carry current to and from the appliance. The round prong is for safety. It connects with a wire inside the outlet that goes down into the ground. If any stray current leaks from the circuit or if there is a short circuit, the ground wire carries the current into the ground, which harmlessly absorbs it. Q: What type of plug is generally used on metal appliances? Choices: - 4 prong - .2 prong - 5 prong - 3 prong A:
3 prong
Q: Answer the following question given this paragraph: 18.2 Formation of New Species Speciation occurs along two main pathways: geographic separation (allopatric speciation) and through mechanisms that occur within a shared habitat (sympatric speciation). Both pathways isolate a population reproductively in some form. Mechanisms of reproductive isolation act as barriers between closely related species, enabling them to diverge and exist as genetically independent species. Prezygotic barriers block reproduction prior to formation of a zygote, whereas postzygotic barriers block reproduction after fertilization occurs. For a new species to develop, something must cause a breach in the reproductive barriers. Sympatric speciation can occur through errors in meiosis that form gametes with extra chromosomes (polyploidy). Autopolyploidy occurs within a single species, whereas allopolyploidy occurs between closely related species. Q: Both pathways that isolate a population reproductively in some form, allopatric and sympatric describe what, which means the creation of new species? Choices: - accumulation - extinction - bacterial - speciation A:
A: speciation
Question: Answer the following question given this paragraph: Figure 9.28 Diffusion occurs when gas molecules disperse throughout a container. Effusion occurs when a gas passes through an opening that is smaller than the mean free path of the particles, that is, the average distance traveled between collisions. Effectively, this means that only one particle passes through at a time. Q: What occurs when a gas passes through an opening that is smaller than the mean free path of the particles? Choices: - precipitation - malformation - dissipation - effusion A:
Answer: effusion
*Question*
Answer the following question given this paragraph: Q: In heart muscle, what released by neurons activates a signal transduction pathway? Choices: - dopamine - glucose - glutamate - acetylcholine A:
**Answer**
acetylcholine
(Q).
Answer the following question given this paragraph: Cumulus clouds are white and puffy. Convection currents make them grow upward and they may grow very tall. When they produce rain, they are called cumulonimbus. Q: What causes cumulus clouds to grow upward? Choices: - moisture currents - gas currents - mantle currents - convection currents A:
(A).
convection currents