Middle Grades Science GACE Exam Questions And Answers (Updated And Verified)

Middle Grades Science GACE Exam Questions And Answers (Updated And Verified) What is a by-product of the fission process in a nuclear power plant and is of serious environmental concern? - answerRadioactive waste The pitch perceived by a musician listening to a sound is analogous to which wave properties? - answerFrequency The loud chirping noises made by crickets serve as the primary means by which crickets - answerattract mates Which subatomic particles has a negative charge? - answerElectron Which most accurately describes the direction in which all rivers flow? - answerFrom higher elevations to lower elevations In a molecule of DNA, which nitrogenous base forms hydrogen bonds with cytosine? - answerGuanine Which of the following is a balanced chemical equation? A. Cl2 + NaBr →→ Br2 + 2 NaCl B. Cl2 + 2 NaBr →→ Br2 + NaCl C. Cl2 + 2 NaBr →→ Br2 + 2 NaCl D. 2 Cl2 + NaBr →→ 2 Br2 + NaCl - answerC. Cl2 + 2 NaBr →→ Br2 + 2 NaCl When heat radiated from Earth's surface gets absorbed and trapped by gases in Earth's atmosphere and cannot escape back into space, the process is referred to as - answerthe greenhouse effect Question: When the Sun, the Moon, and Earth are aligned as shown above, which of the following could probably be observed at point X on Earth? - answerA solar eclipse A block moves to the right on a frictionless horizontal surface at a constant speed V, as shown above. The block collides with a second block, which is at rest but free to move. The two blocks stick together upon colliding. If no external horizontal forces act on the blocks, then after the collision the two blocks will move to the right with - answera constant speed less than V In cold weather, it is more difficult to make people comfortable in a room with a high ceiling than in a room with a low ceiling primarily because - answercold air is more dense than warm air Which diseases is caused by bacteria? - answerTuberculosis A drop of water containing green plant cells and bacteria that are attracted to oxygen is placed on a glass slide, and the drop is sealed with a coverslip having grease around the edges. When the slide is illuminated, a process will occur in which of the following plant cell structures that will cause the bacteria to move toward the plant cells? - answerChloroplast The refraction of light underlies the operation of which of the following? Select all that apply. A. A magnifying glass B. A pair of binoculars C. An incandescent lightbulb D. A motion-picture projector - answerA. A magnifying glass B. A pair of binoculars D. A motion-picture projector The enzymes found in living organisms serve principally as - answercatalysts Which type of precipitation forms when water vapor changes directly from a gas to a solid in the atmosphere? - answerSnow A student placed 20 radish seeds on a damp paper towel in a petri dish and placed the dish under a fluorescent light. After 48 hours, all the seeds had germinated. In order for the student to draw a valid conclusion about the effect of water on seed germination, what should also have been included in the investigation? - answerA second dish with a dry, rather than damp, paper towel should have been used. Which characteristics demonstrates that a green substance collected from the surface of a rock is alive? - answerThe substance fixes carbon dioxide into sugars in the presence of sunlight. An alkaline battery converts which of the following forms of energy into electrical energy? - answerChemical