Ques: Q: What kind of light bulb contains a thin wire filament made of tungsten that gets hot and glows? Read this paragraph and choose the correct option from the provided answers: An incandescent light bulb produces visible light by incandescence. The bulb contains a thin wire filament made of tungsten. When electric current passes through the filament, it gets extremely hot and glows. You can learn more about incandescent light bulbs at the URL below. Choices: - black light - LED - fluorescent - incandescent A:
Ans: incandescent

Ques: Q: What do you call a process that uses microorganisms to consume a pollutant? Read this paragraph and choose the correct option from the provided answers: Cleaning groundwater in an aquifer requires bioremediation or chemical remediation. Bioremediation uses microorganisms to consume a pollutant. Chemical remediation destroys the contaminant. Choices: - siltation - filtration - biodegradation - bioremediation A:
Ans: bioremediation

Ques: Q: What is something that all machines must overcome? Read this paragraph and choose the correct option from the provided answers: The mechanical advantage of a simple machine such as a pulley is the factor by which the machine changes the force applied to it. The ideal mechanical advantage of a machine is its mechanical advantage in the absence of friction. All machines must overcome friction, so the ideal mechanical advantage is always somewhat greater than the actual mechanical advantage of the machine as it is used in the real world. Choices: - stress - work - temperature - friction A:
Ans: friction

Ques: Q: What is most often the cause of encephalitis? Read this paragraph and choose the correct option from the provided answers: Encephalitis is a brain infection most often caused by viruses. The immune system tries to fight off a brain infection, just as it tries to fight off other infections. But sometimes this can do more harm than good. The immune system's response may cause swelling in the brain. With no room to expand, the brain pushes against the skull. This may injure the brain and even cause death. Medicines can help fight some viral infections of the brain, but not all infections. Choices: - parasites - bacterial infections - calcium buildup - viruses A:
Ans:
viruses