Q: Q: A lens of what shape causes rays of light to diverge, or spread apart, as they pass through it? Read this paragraph and choose the correct option from the provided answers: A concave lens is thicker at the edges than it is in the middle. You can see the shape of a concave lens in the Figure below . From the diagram, it's clear that the lens causes rays of light to diverge, or spread apart, as they pass through it. Note that the image formed by a concave lens is on the same side of the lens as the object. It is also smaller than the object and right-side up. However, it isn't a real image. It is a virtual image. Your brain "tricks" you into seeing an image there. The light rays actually pass through the glass to the other side and spread out in all directions. You can explore the formation of images by a concave lens at this URL: http://phet. colorado. edu/sims/geometric-optics/geometric-optics_en. html. Choices: - convex - flat - elongated - concave A:
A: concave

Q: Q: The main components of the circulatory system are the heart, blood vessels, and what else? Read this paragraph and choose the correct option from the provided answers: The circulatory system can be compared to a system of interconnected, one-way roads that range from superhighways to back alleys. Like a network of roads, the job of the circulatory system is to allow the transport of materials from one place to another. As described in Figure below , the materials carried by the circulatory system include hormones, oxygen, cellular wastes, and nutrients from digested food. Transport of all these materials is necessary to maintain homeostasis of the body. The main components of the circulatory system are the heart, blood vessels, and blood. Choices: - lungs - nerves - brain - blood A:
A: blood

Q: Q: Vascular plants evolved what basic structures to collect sunlight? Read this paragraph and choose the correct option from the provided answers: Vascular plants evolved leaves to collect sunlight. At first, leaves were tiny and needle-like, which helped reduce water loss. Later, leaves were much larger and broader, so plants could collect more light. Choices: - flowers - stems - roots - leaves A:
A: leaves

Q: Q: Independent assortment occurs when what go to opposite poles of the cell in anaphase i? Read this paragraph and choose the correct option from the provided answers: Independent assortment occurs when chromosomes go to opposite poles of the cell in anaphase I. Which chromosomes end up together at each pole is a matter of chance. You can see this in Figures 5.15 and 5.16 as well. Choices: - receptors - ballasts - prokaryotes - chromosomes A:
A: chromosomes