Answer the following question given this paragraph: A bowling ball rolls down a lane at a constant velocity. (e) A car accelerates down the road. There is friction between the tires and the road. Q: What does the tires meeting the road cause when a car accelerates? Choices: - erosion - vibration - thrust - friction A:
friction
Answer the following question given this paragraph: In displacement versus time graphs, the slope of the line is the velocity of the object. In this case of a velocity versus time graph, the slope of the line is the acceleration. If you take any segment of this line and determine the to ratio, you will get 6.0 m/s 2 which we know to be the constant acceleration of this object. Q: When two of these meet, the result is often a storm? Choices: - air pockets - electromagnetic waves - tectonic plates - air masses A:
air masses
Q: Answer the following question given this paragraph: Q: All new alleles are formed by what types of mutations? Choices: - chaotic - systemic - ordinary - random A:
A: random
Question: Answer the following question given this paragraph: Reproduction Fungi reproduce sexually and/or asexually. Perfect fungi reproduce both sexually and asexually, while the so-called imperfect fungi reproduce only asexually (by mitosis). In both sexual and asexual reproduction, fungi produce spores that disperse from the parent organism by either floating on the wind or hitching a ride on an animal. Fungal spores are smaller and lighter than plant seeds. The giant puffball mushroom bursts open and releases trillions of spores. The huge number of spores released increases the likelihood of landing in an environment that will support growth (Figure 24.6). Q: What do all respiratory diseases affect? Choices: - liquid exchange process - helium exchange process - transit exchange process - gas exchange process A:
Answer: gas exchange process
*Question*
Answer the following question given this paragraph: The scientific method is employed by scientists around the world, but it is not always conducted in the order above. Sometimes, hypothesis are formulated before observations are collected; sometimes observations are made before hypothesis are created. Regardless, it is important that scientists record their procedures carefully, allowing others to reproduce and verify the experimental data and results. After many experiments provide results supporting a hypothesis, the hypothesis becomes a theory . Theories remain theories forever, and are constantly being retested with every experiment and observation. Theories can never become fact or law . Q: What does a hypothesis become after many experiments provide results supporting it? Choices: - a model - a fact - a study - a theory A:
**Answer**
a theory
(Question)
Answer the following question given this paragraph: External forces are forces that act on the system from outside. In our previous example, external forces include the force of gravity acting on both cars (because the other part of the force pair, the pull of gravity the Earth experiences coming from the cars, is not included in the system) and the forces of friction between the tires and the road. Q: What do we call forces that act on the system from outside? Choices: - material - internal - static - external A:
(Answer)
external