Answer the following question given this paragraph: Radioactive dating is the use of radioactive decay to estimate the ages of fossils and rocks. An example is carbon-14 dating. Q: What is the term for the use of radioactive decay to estimate the ages of fossils and rock? Choices: - isotope test - microwave theory - radioactive illustrating - radioactive dating A:
radioactive dating
Answer the following question given this paragraph: Both alpha and beta decay change the number of protons in an atom's nucleus, thereby changing the atom to a different element. In alpha decay, the nucleus loses two protons. In beta decay, the nucleus either loses a proton or gains a proton. In gamma decay, no change in proton number occurs, so the atom does not become a different element. Q: Both alpha and beta decay change the number of what in an atom's nucleus? Choices: - neutrons - Gamma decay - electrons - protons A:
protons
Q: Answer the following question given this paragraph: There are two basic types of electric circuits, called series and parallel circuits. They differ in the number of loops through which current can flow. You can see an example of each type of circuit in Figure below . Q: Series and parallel circuits are two basic types of what? Choices: - mechanical circuits - chemical circuits - mutual circuits - electric circuits A:
A: electric circuits
Question: Answer the following question given this paragraph: Sediments are deposited in an environment of deposition. This can be a sand dune, beach, lake, river bend, or a great number of other locations. Scientists can figure out the environment of deposition of a sedimentary rock by looking at the size of sediments and the sedimentary features in the rock. Q: The term "environment of deposition" is useful for understanding the characteristics of what type of rock? Choices: - glacial - meteor - limestone - sedimentary A:
Answer: sedimentary
*Question*
Answer the following question given this paragraph: Ozone (O 3 ) depletion in the atmosphere is of significant concern. This gas serves as a protection against the ultraviolet rays of the sun. Ozone is naturally depleted in addition to the depletion caused by human-made chemicals. The depletion reaction is a two-step process:. Q: What done ozone help protect against? Choices: - gamma rays - x-rays - helium rays - ultraviolet rays A:
**Answer**
ultraviolet rays
Answer the following question given this paragraph: The major atmospheric gases are nitrogen and oxygen. The atmosphere also contains minor amounts of other gases, including carbon dioxide. Q: What are the two major atmospheric gases? Choices: - carbon and helium - nitrogen and hydrogen - hydrogen and oxygen - nitrogen and oxygen A:
nitrogen and oxygen