Answer the following question given this paragraph: Electric generators convert mechanical energy to electric energy. The generator consists of some number of wire loops wrapped around an iron core and placed in a strong magnetic field. The loops of wire and the iron core are called the armature . The armature is mounted so that it can rotate freely inside the magnetic field. Mechanical energy is used to spin the armature in the field so that the wire loops cut across the field and produce electric current. The of this current is calculated by . Q: Electric generators convert what type of energy to electric energy? Choices: - electromagnetic energy - thermodynamic energy - fluid energy - mechanical energy A:
mechanical energy
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Answer the following question given this paragraph: Clouds are classified on the basis of where and how they form. Three main types of clouds are cirrus, stratus, and cumulus. Figure below shows these and other types of clouds. Q: Cirrus, stratus, and cumulus are the main types of what? Choices: - weather - storms - climate - clouds A:
clouds
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Answer the following question given this paragraph: Why do satellites stay in orbit? Why don't they crash into Earth due to the planet's gravity? Newton's law of universal gravitation describes what happens. Every object in the universe is attracted to every other object. Gravity makes an apple fall to the ground. Gravity also keeps you from floating away into the sky. Gravity holds the Moon in orbit around Earth. It keeps Earth in orbit around the Sun. Q: What keeps earth in orbit around the sun? Choices: - energy - motion - momentum - gravity A:
gravity
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Answer the following question given this paragraph: Dutch elm trees used to be common, beautiful trees in the United States. Now most of them, like this tree, have been killed by Dutch elm disease. Dutch elm disease is caused by a fungus. This is just one example of how fungi can interact with other species. Q: Dutch elm trees used to be common, beautiful trees in the united states. now most of them have been killed by what? Choices: - carbon dioxide - beetles - cancer - dutch elm disease A:
dutch elm disease
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