Problem:OPTIONS:
- rotation
- compression
- inclination
- acceleration

Answer the following question given this paragraph: A change in an object's motionsuch as Xander speeding up on his scooteris called acceleration . Acceleration occurs whenever an object is acted upon by an unbalanced force. The greater the net force acting on the object, the greater its acceleration will be, but the mass of the object also affects its acceleration. The smaller its mass is, the greater its acceleration for a given amount of force. Newton's second law of motion summarizes these relationships. According to this law, the acceleration of an object equals the net force acting on it divided by its mass. This can be represented by the equation:. Q: What is the term for a change in an object's motion, which occurs whenever an object is acted upon by an unbalanced force? A:
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A: acceleration

Problem:OPTIONS:
- fission
- active transport
- Osmosis
- diffusion

Answer the following question given this paragraph: The folded surfaces of the gills provide a large surface area to ensure that the fish gets sufficient oxygen. Diffusion is a process in which material travels from regions of high concentration to low concentration until equilibrium is reached. In this case, blood with a low concentration of oxygen molecules circulates through the gills. The concentration of oxygen molecules in water is higher than the concentration of oxygen molecules in gills. As a result, oxygen molecules diffuse from water (high concentration) to blood (low concentration), as shown in Figure 39.5. Similarly, carbon dioxide molecules in the blood diffuse from the blood (high concentration) to water (low concentration). Q: What term is used to describe a process in which material travels from regions of high concentration to low concentration until equilibrium is reached? A:
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A: diffusion

Problem:OPTIONS:
- bone
- hair
- cartilage
- muscle

Answer the following question given this paragraph: Each muscle fiber contains hundreds of organelles called myofibrils . Each myofibril is made up of two types of protein filaments: actin filaments, which are thinner, and myosin filaments, which are thicker. Actin filaments are anchored to structures called Z lines (see Figure below ). The region between two Z lines is called a sarcomere . Within a sarcomere, myosin filaments overlap the actin filaments. The myosin filaments have tiny structures called cross bridges that can attach to actin filaments. Q: Hundreds of organelles called myofibrils, made up of two types of protein filaments, are contained in each fiber of what? A:
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A: muscle

Problem:OPTIONS:
- microwave
- atomic
- kinetic
- nuclear

Answer the following question given this paragraph: Nuclear energy is produced by splitting the nuclei of radioactive uranium. This doesn't release air pollution or carbon dioxide, but it does produce dangerous radioactive wastes. Q: What type of energy occurs by splitting the nuclei of radioactive uranium? A:
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A:
nuclear