What are the three types of rays produced in radioactive decay? Which will penetrate farther into material?
What will be an ideal response?
Alpha rays, beta rays, and gamma rays: Alpha rays are streams of particles, which are the nuclei of helium atoms. They are the heaviest particles ejected by radioactive materials, and are positively charged. Beta rays are streams of electrons, emanating from the nucleus, and are negatively charged. Gamma rays are high-frequency electromagnetic waves ejected by the atomic nucleus during decay. Gamma rays have no electric charge and are the most penetrating of the rays.
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About half the native animals of Australia are __________, which raise their young in pouches.
A. birds B. reptiles C. rabbits D. marsupials
Mafic magmas tend to flow ___
a) at the same rate as silicic magmas b) much faster than silicic magmas c) much slower than silicic magmas d) faster or slower than silicic magmas depending on the volcano e) not enough information has been provided to answer the question
The modern suburb is segregated in two ways: by class (wealth, size of housing, and location) and by a separation from manufacturing and industrial activities
Indicate whether the statement is true or false.
Judge the following sentence according to the criteria given below: Buckshot barnacles can survive above the high tide shoreline BECAUSE they have a protective shell
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.