Answer the following question given this paragraph: The speed of most waves depends on the medium, or the matter through which the waves are traveling. Generally, waves travel fastest through solids and slowest through gases. That's because particles are closest together in solids and farthest apart in gases. When particles are farther apart, it takes longer for the energy of the disturbance to pass from particle to particle through the medium. At the following URL, you can watch an animation showing what happens when a wave passes from one medium to another. Q: Why do waves travel faster through solids? Choices: - particles fuse together - particles range together - particles pipe together - particles closer together A:
particles closer together
Answer the following question given this paragraph: Gases are composed of tiny particles that are separated by large distances. Gas particles are constantly moving, experiencing collisions with other gas particles and the walls of their container. The velocity of gas particles is related to the temperature of a gas. Gas particles do not experience any force of attraction or repulsion with each other. Q: What state of matter is characterized by tiny particles separated by large distances, which do not experience any force of attraction or repulsion with each other? Choices: - steam - emissions - liquids - gas A:
gas
Q: Answer the following question given this paragraph: Development of Fruit and Fruit Types After fertilization, the ovary of the flower usually develops into the fruit. Fruits are usually associated with having a sweet taste; however, not all fruits are sweet. Botanically, the term "fruit" is used for a ripened ovary. In most cases, flowers in which fertilization has taken place will develop into fruits, and flowers in which fertilization has not taken place will not. Some fruits develop from the ovary and are known as true fruits, whereas others develop from other parts of the female gametophyte and are known as accessory fruits. The fruit encloses the seeds and the developing embryo, thereby providing it with protection. Fruits are of many types, depending on their origin and texture. The sweet tissue of the blackberry, the red flesh of the tomato, the shell of the peanut, and the hull of corn (the tough, thin part that gets stuck in your teeth when you eat popcorn) are all fruits. As the fruit matures, the seeds also mature. Q: What type of seed-bearing structure of a flowering plant usually develop into? Choices: - Stem - food - Apple - fruit A:
A: fruit
Question: Answer the following question given this paragraph: Entropy increases as temperature increases. An increase in temperature means that the particles of the substance have greater kinetic energy. The faster moving particles have more disorder than particles that are moving more slowly at a lower temperature. Q: What does increased temperature do to a substance's kinetic energy? Choices: - generates - nothing - decreases - increases A:
Answer: increases
*Question*
Answer the following question given this paragraph: Cardiac muscle also contracts and gets shorter. This muscle is found only in the heart. The sudden burst of contraction forces blood throughout your body. When the cardiac muscle relaxes, the heart fills with blood. This rhythmic contraction must continue for your whole life, luckily the heart muscle never gets tired. If your heart beats 75 times a minute, how many times does it beat in an hour? A day? A year? 85 years?. Q: Cardiac muscle is only found where? Choices: - lung - brain - abdomen - heart A:
**Answer**
heart
Q: Answer the following question given this paragraph: Early researchers in radioactivity found that the emissions from radioactivity could be classified into three distinct types according to their penetrating power. One type of radiation could barely penetrate a sheet of paper. The second type could pass through as much as 3 mm of aluminum. The third type was extremely penetrating and could pass through several centimeters of lead. They named these three types of radiation alpha , beta , and gamma respectively. Eventually, each type of radiation was further identified. Alpha particles are the nuclei of helium atoms, . Beta particles are electrons, and gamma rays are very high energy photons (even higher energy than x-rays). Q: Alpha, beta and gamma are three types of what? Choices: - directions - mutation - convection - radiation A:
A: radiation