Answer the following question given this paragraph: Primary pollutants enter the air directly. Some are released by natural processes, like ash from volcanoes. Most are released by human activities. They pour into the air from vehicles and smokestacks. Several of these pollutants are described below. Q: Ash that enters the air naturally as a result of a volcano eruption is classified as what kind of pollutant? Choices: - thick pollutant - secondary pollutant - natural pollutant - primary pollutant A:
primary pollutant
Answer the following question given this paragraph: Force and electric field are vectors and thus have direction as well as their value. Q: Because force and electric field are what, they have direction as well as their value? Choices: - sensors - neurons - mass - vectors A:
vectors
Q: Answer the following question given this paragraph: Q: What do ranchers fear will happen if wolves return? Choices: - loss of environment - human predation - vegetation predation - livestock predation A:
A: livestock predation
Question: Answer the following question given this paragraph: There are also six types of leptons, including electrons. Leptons have an electric charge of either -1 or 0. Electrons, for example, have a charge of -1. Leptons have mass, although the mass of electrons is extremely small. Q: How many types of leptons are there? Choices: - nine - two - twelve - six A:
Answer: six
*Question*
Answer the following question given this paragraph: When hit from behind in a car crash, a passenger can suffer a neck injury called whiplash . Explain in terms of inertia how this occurs, and how headrests can prevent the injury. Q: When hit from behind in a car crash, a passenger can suffer a neck injury called what? Choices: - inflammation - necklash - twisted neck - whiplash A:
**Answer**
whiplash
Answer the following question given this paragraph: The magnitude, direction, and point of application of the force are incorporated into the definition of the physical quantity called torque. Torque is the rotational equivalent of a force. It is a measure of the effectiveness of a force in changing or accelerating a rotation (changing the angular velocity over a period of time). In equation form, the magnitude of torque is defined to be. Q: What is the rotational equivalent of a force? Choices: - momentum - power - centripetal force - torque A:
torque