Student question: Does the density of helium cause voices to sound deeper?
Teacher response: The detailed solution is: Helium is less dense than air. Sound travels more quickly through helium than it does through air. When sound travels more quickly, the tone of it raises and sounds higher..

Student question: Do you need a farmer to make a circuit board?
Teacher response: The detailed solution is: Farmers cultivate and produce crops and/or livestock for sale or consumption. Circuit boards contain various man made materials as well as metals. Metals are produced from the earth by miners..

Student question: Do spider wasps have eight legs?
Teacher response: The detailed solution is: A spider wasp is a kind of wasp, which is an insect. Insects all have six legs..

Student question: Is Guitar Hero Beatles inappropriate for a US third grader?
Teacher response:
The detailed solution is: The average age of a US third grader is 8. Guitar Hero is recommended for ages 7 and up. The Beatles were a British rock band with a plethora of radio friendly hits..