Answer the following question given this paragraph: Hot spots may also be active at plate boundaries. This is especially common at mid-ocean ridges. Iceland is formed by a hot spot along the Mid-Atlantic Ridge. Q: What makes soil and rock particles move gradually down the slope during each thaw? Choices: - heat - wind - rain - gravity A:
gravity
Answer the following question given this paragraph: The volume increases as the temperature increases. The result has three significant figures. Q: What happens to volume as the temperature increases? Choices: - volume fluctuates - volume decreases - volume is unchanged - volume increases A:
volume increases
Q: Answer the following question given this paragraph: Plants are multicellular and eukaryotic, meaning their cells have a nucleus and membrane-bound organelles. Q: Plants are described by what term, meaning their cells have a nucleus and membrane-bound organelles? Choices: - complex - prokaryotic - walled - eukaryotic A:
A: eukaryotic
Question: Answer the following question given this paragraph: Wave amplitude is determined by the energy of the disturbance that causes the wave. A wave caused by a disturbance with more energy has greater amplitude. Q: What is determined by the energy of the disturbance that causes the wave? Choices: - wavelength - Ohm - frequency - wave amplitude A:
Answer: wave amplitude
*Question*
Answer the following question given this paragraph: Law of Refraction Figure 25.12 shows how a ray of light changes direction when it passes from one medium to another. As before, the angles are measured relative to a perpendicular to the surface at the point where the light ray crosses it. (Some of the incident light will be reflected from the surface, but for now we will concentrate on the light that is transmitted. ) The change in direction of the light ray depends on how the speed of light changes. The change in the speed of light is related to the indices of refraction of the media involved. In the situations shown in Figure 25.12, medium 2 has a greater index of refraction than medium 1. This means that the speed of light is less in medium 2 than in medium 1. Note that as shown in Figure 25.12(a), the direction of the ray moves closer to the perpendicular when it slows down. Conversely, as shown in Figure 25.12(b), the direction of the ray moves away from the perpendicular when it speeds up. The path is exactly reversible. In both cases, you can imagine what happens by thinking about pushing a lawn mower from a footpath onto grass, and vice versa. Going from the footpath to grass, the front wheels are slowed and pulled to the side as shown. This is the same change in direction as for light when it goes from a fast medium to a slow one. When going from the grass to the footpath, the front wheels can move faster and the mower changes direction as shown. This, too, is the same change in direction as for light going from slow to fast. Q: What law explains how the change in direction of the light ray depends on how the speed of light changes, which in turn is related to the indices of refraction of the media involved? Choices: - Boyle's law - Born's law - Newton's first law - law of refraction A:
**Answer**
law of refraction
(Question)
Answer the following question given this paragraph: Q: What do drugs that alleviate symptoms of schizophrenia block? Choices: - adrenaline receptors - histamine receptors - ephedrine receptors - dopamine receptors A:
(Answer)
dopamine receptors