Answer the following question given this paragraph: The Sun and many other light sources produce waves that are randomly polarized (see Figure 27.39). Such light is said to be unpolarized because it is composed of many waves with all possible directions of polarization. Polaroid materials, invented by the founder of Polaroid Corporation, Edwin Land, act as a polarizing slit for light, allowing only polarization in one direction to pass through. Polarizing filters are composed of long molecules aligned in one direction. Thinking of the molecules as many slits, analogous to those for the oscillating ropes, we can understand why only light with a specific polarization can get through. The axis of a polarizing filter is the direction along which the filter passes the electric field of an EM wave (see Figure 27.40). Q: The sun and many other light sources produce waves that are randomly this? Choices: - obfuscated - amplified - colored - polarized A:
polarized
Answer the following question given this paragraph: Plasma is a state of matter that resembles a gas but has certain properties that gases do not have. Like a gas, plasma consists of particles of matter than can pull apart and spread out, so it lacks a fixed volume and a fixed shape. Unlike a gas, plasma can conduct electricity and respond to a magnetic field. That's because plasma consists of electrically charged particles called ions, instead of uncharged particles such as atoms or molecules. This gives plasma other interesting properties as well. For example, plasma glows with colored light when electricity passes through it. You can learn more about plasma at this URL: http://www. youtube. com/watch?v=VkeSI_B5Ljc. Q: What is the state of matter that resembles a gas, but is made of ions, giving it different properties than a typical gas? Choices: - gamma - vapor - acid - plasma A:
plasma
Q: Answer the following question given this paragraph: A substance is stored in a reservoir. The amount of time it stays in that reservoir is its residence time. Q: What do we call the amount of time a substance is stored in a reservoir? Choices: - storage time - latency - presence time - residence time A:
A: residence time
Question: Answer the following question given this paragraph: Dermal tissue covers the outside of a plant in a single layer of cells called the epidermis. You can think of the epidermis as the plant's skin. It mediates most of the interactions between a plant and its environment. Epidermal cells secrete a waxy substance called cuticle , which coats, waterproofs, and protects the above-ground parts of plants. Cuticle helps prevent water loss, abrasions, infections, and damage from toxins. Q: What is the waxy substance that epidermal cells secrete? Choices: - cellulose - bile - saliva - cuticle A:
Answer: cuticle
*Question*
Answer the following question given this paragraph: During a nuclear decay process that occurs by positron emission, a proton is converted into a neutron and a positron. The neutron remains in the nucleus, and the positron is expelled. Overall, the atomic number of the parent nucleus increases by one, and the mass number is unchanged. For example, carbon-11 emits a positron to become boron-11:. Q: What happens to the mass number during a nuclear decay process by positron emission? Choices: - it rises - it decreases - it increases - remains unchanged A:
**Answer**
remains unchanged
(Question)
Answer the following question given this paragraph: A monosaccharide is a simple sugar such as fructose or glucose. Fructose is found in fruits, whereas glucose generally results from the digestion of other carbohydrates. Glucose is used for energy by the cells of most organisms. Q: What is a simple sugar such as fructose or glucose? Choices: - disaccharide - polysaccharides - galactose - monosaccharide A:
(Answer)
monosaccharide