Q: Why is uranus so faint? Read this paragraph and choose the correct option from the provided answers: Uranus is faint because it is very far away. Its distance from the Sun is 2.8 billion kilometers (1.8 billion miles). A photon from the Sun takes about 2 hours and 40 minutes to reach Uranus. Uranus orbits the Sun once about every 84 Earth years. Choices: - polluted atmosphere - too small - too cold - far away A:
far away
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Q: What is the radula made mostly of? Read this paragraph and choose the correct option from the provided answers: Many species have a feeding structure, the radula , found only in mollusks. The radula can be thought of as a "tongue-like" structure. The radula is made mostly of chitin. Types of radulae range from structures used to scrape algae off of rocks to the beaks of squid and octopuses. Choices: - casein - chlorophyll - schist - chitin A:
chitin
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Q: Liquid water changing to water vapor is called? Read this paragraph and choose the correct option from the provided answers: Choices: - oxidation - respiration - transpiration - evaporation A:
evaporation
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Q: When waves are reflected at the same angle, what is it called? Read this paragraph and choose the correct option from the provided answers: Reflected waves have the same speed and frequency as the original waves before they were reflected. However, the direction of the reflected waves is different. When waves strike an obstacle head on, the reflected waves bounce straight back in the direction they came from. When waves strike an obstacle at any other angle, they bounce back at the same angle but in a different direction. This is illustrated in the Figure below . In this diagram, waves strike a wall at an angle, called the angle of incidence. The waves are reflected at the same angle, called the angle of reflection, but in a different direction. Notice that both angles are measured relative to a line that is perpendicular to the wall. Choices: - field of view - refraction - phenomenon of reflection - angle of reflection A:
angle of reflection
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