Q: Solid-state radiation detectors convert ionization produced in a semiconductor (like those found in computer chips) directly into what? Read this paragraph and choose the correct option from the provided answers: Solid-state radiation detectors convert ionization produced in a semiconductor (like those found in computer chips) directly into an electrical signal. Semiconductors can be constructed that do not conduct current in one particular direction. When a voltage is applied in that direction, current flows only when ionization is produced by radiation, similar to what happens in a Geiger tube. Further, the amount of current in a solid-state detector is closely related to the energy deposited and, since the detector is solid, it can have a high efficiency (since ionizing radiation is stopped in a shorter distance in solids fewer particles escape detection). As with scintillators, very sophisticated information can be obtained from solid-state detectors. PhET Explorations: Radioactive Dating Game Learn about different types of radiometric dating, such as carbon dating. Understand how decay and half life work to enable radiometric dating to work. Play a game that tests your ability to match the percentage of the dating element that remains to the age of the object. Choices: - thermal energy - microwaves - isotopes - electrical signal A:
electrical signal

(Question)
Q: What gas is contributing to the greenhouse effect? Read this paragraph and choose the correct option from the provided answers: Another major problem caused by air pollution is global climate change. Gases such as carbon dioxide from the burning of fossil fuels increase the natural greenhouse effect. This raises the temperature of Earth's surface. Choices: - nitrogen - oxygen - sodium chloride - carbon dioxide A:
(Answer)
carbon dioxide

Ques: Q: What term means the time in which half of the original number of radioactive nuclei in a sample decay? Read this paragraph and choose the correct option from the provided answers: Half-Life Why use a term like half-life rather than lifetime? The answer can be found by examining Figure 31.21, which shows how the number of radioactive nuclei in a sample decreases with time. The time in which half of the original number of nuclei decay is defined as the half-life, t 1 / 2 . Half of the remaining nuclei decay in the next half-life. Further, half of that amount decays in the following half-life. Therefore, the number of radioactive nuclei decreases from. Choices: - reduced life - quarter-life - partial-life - half-life A:
Ans: half-life

(Q).
Q: Dolphins are what type of animal? Read this paragraph and choose the correct option from the provided answers: Dolphins are mammals that have adapted to swimming and reproducing in water. Choices: - reptile - fish - whale - mammal A:
(A).
mammal

Ques:Q: What unit of measure is equal to the amount of work a horse can do in 1 minute? Read this paragraph and choose the correct option from the provided answers: Power may be measured in a unit called the horsepower. One horsepower is the amount of work a horse can do in 1 minute, which equals 745 watts of power. Choices: - joule - watt - torque - horsepower A:

Ans:horsepower

Ques: Q: Why does photosynthesis not occur in the deep-water zone? Read this paragraph and choose the correct option from the provided answers: The deep-water zone is dark so there is no photosynthesis. Most deep-water organisms are scavengers. They feed on dead organisms that fall to the bottom of the lake. Crabs and catfish are two of these types of organisms. Fungi and bacteria are decomposers that live in the deep zone. Choices: - it is cold - it is pressurized - it is stagnant - it is dark A:
Ans:
it is dark