Ques:Q: What is harmless water vapor, for a powerplant? Read this paragraph and choose the correct option from the provided answers: Steam rises from the cooling towers of this nuclear power plant. The steam is only harmless water vapor. Unlike a power plant that burns fossil fuel, a nuclear power plant doesn't release pollution into the air. That's because a nuclear power plant produces power by nuclear fission, a type of nuclear reaction. Choices: - wind - plasma - fog - steam A:

Ans:steam
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Ques:Q: Enzymes in cellular reactions work to do what to the reaction? Read this paragraph and choose the correct option from the provided answers: Enzymes are extremely efficient in speeding up reactions. They can catalyze up to several million reactions per second. As a result, the difference in rates of biochemical reactions with and without enzymes may be enormous. A typical biochemical reaction might take hours or even days to occur under normal cellular conditions without an enzyme, but less than a second with an enzyme. Choices: - increase yield - decrease heat - slow it down - speed it up A:

Ans:speed it up
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Ques:Q: Find the overall magnification of what instrument by finding the magnification of the objective, then the magnification of the eyepiece? Read this paragraph and choose the correct option from the provided answers: Example 26.5 Microscope Magnification Calculate the magnification of an object placed 6.20 mm from a compound microscope that has a 6.00 mm focal length objective and a 50.0 mm focal length eyepiece. The objective and eyepiece are separated by 23.0 cm. Strategy and Concept This situation is similar to that shown in Figure 26.16. To find the overall magnification, we must find the magnification of the objective, then the magnification of the eyepiece. This involves using the thin lens equation. Solution The magnification of the objective lens is given as. Choices: - belt microscope - Fixing microscope - part microscope - compound microscope A:

Ans:compound microscope
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Ques:Q: What machines have scientist built to smash particles that are smaller than atoms into each other head-on? Read this paragraph and choose the correct option from the provided answers: Scientists have built machines called particle accelerators . These amazing tools smash particles that are smaller than atoms into each other head-on. This creates new particles. Scientists use particle accelerators to learn about nuclear fusion in stars. They can also learn about how atoms came together in the first few minutes of the Universe. Two well-known accelerators are SLAC, in California, and CERN, in Switzerland ( Figure below ). Choices: - energy accelerators - nitrogen accelerators - Atom Accelerators - particle accelerators A:

Ans:
particle accelerators
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