Given a scientific passage and an answer, generate a question for the given answer.

Input: Consider Input: Passage: One dimensional motion describes objects moving in straight lines. Speed is a scalar measure of how quickly an object is moving along this line. Velocity is speed with a direction, making it a vector. If an object's velocity changes with time, the object is said to be accelerating. When restricted to one dimension, there are only two possible directions for the velocity and acceleration vectors to point in. As we'll see in the next chapters, understanding an object's acceleration is the key to understanding its motion. Answer: speed

Output: What is the term for a scalar measure of how quickly an object is moving along this line?

Input: Consider Input: Passage: Minerals are chemical elements that don't come from living things or include the element carbon. Many minerals are needed in the diet for normal functioning of the body. Several minerals that are needed in relatively large amounts are listed in Table below . As you can see from these examples, minerals have a diversity of important functions. Your body can't produce any of the minerals it needs, so you must get them from the food you eat. The table shows good food sources of the minerals. Answer: minerals

Output: What is the name for elements that neither contain carbon nor come from living things?

Input: Consider Input: Passage: Nuclear power is clean. It does not pollute the air. However, the use of nuclear energy does create other environmental problems. Uranium must be mined ( Figure below ). The process of splitting atoms creates radioactive waste. This waste may be dangerous for thousands or hundreds of thousands of years. As yet, there is no long-term solution for storing the radioactive waste. Answer: radioactive
Output: The process of splitting atoms creates what kind of waste?