Problem:OPTIONS:
- frictional forces
- tension forces
- hydrodynamic forces
- centripetal forces

Answer the following question given this paragraph: In the absence of a net force, objects move in a straight line. If they turn that is, if their velocity changes, even only in direction there must be an applied force. Forces which cause objects to turn around continuously in a circle are known as centripetal forces. When an object moves in a circle its velocity at any particular instant points in a direction tangent to the circle. The acceleration points towards the center of the circle, and so does the force acting on it. This is only natural, when you think about it if you feel a force pushing you towards your left as you walk forward, you will walk in a circle, always turning left. Q: Forces which cause objects to turn around continuously in a circle are known as? A:
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A: centripetal forces

Problem:OPTIONS:
- stratosphere
- asthenosphere
- mesosphere
- troposphere

Answer the following question given this paragraph: The troposphere is the lowest layer of the atmosphere. In it, temperature decreases with altitude. The troposphere gets some of its heat directly from the Sun. Most, however, comes from Earth's surface. The surface is heated by the Sun and some of that heat radiates back into the air. This makes the temperature higher near the surface than at higher altitudes. Q: What do we call the lowest layer of the atmosphere? A:
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A: troposphere

Problem:OPTIONS:
- algebra
- Euclidean geometry
- calculus
- cartesian geometry

Answer the following question given this paragraph: The plot that we know of as a graph was the brainchild of the French mathematician-philosopher Rene Descartes (1596-1650). His studies in mathematics led him to develop what was known as "Cartesian geometry", including the idea of our current graphs. The coordinates are often referred to as Cartesian coordinates. Q: What do we call the mathematical field of study credited to french mathematician-philosopher rene descartes? A:
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A: cartesian geometry

Problem:OPTIONS:
- intraspecific
- beneficial
- mimicry
- interspecific

Answer the following question given this paragraph: Interspecific competition occurs between members of different species. It may lead to one species going extinct or both becoming more specialized. Q: Which competition leads to one species going extinct or both becoming more specialized? A:
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A:
interspecific