Question: Q: What is the only planet we know that has plate techtonics? Read this paragraph and choose the correct option from the provided answers: The Earth is divided into many plates. These plates move around on the surface. The plates collide or slide past each other. One may even plunge beneath another. Plate motions cause most geological activity. This activity includes earthquakes, volcanoes, and the buildup of mountains. The reason for plate movement is convection in the mantle. Earth is the only planet that we know has plate tectonics. Choices: - Saturn - Mars - Jupiter - earth A:
Answer: earth

Question: Q: What category of animals in the vertebrate group has a relatively small brain but highly developed sense organs? Read this paragraph and choose the correct option from the provided answers: Fish have a nervous system with a brain. Fish brains are small compared with the brains of other vertebrates. However, they are large and complex compared with the brains of invertebrates. Fish also have highly developed sense organs. They include organs to see, hear, feel, smell, and taste. Choices: - mammals - arthropods - primates - fish A:
Answer: fish

Question: Q: Magnetic resonance imaging devices use what to cool the superconducting magnets? Read this paragraph and choose the correct option from the provided answers: Magnetic resonance imaging (NMR) devices use liquid nitrogen to cool the superconducting magnets. Nitrogen is a gas at room temperature and liquefies at -195.8C. Its neighbor on the periodic table (oxygen) boils at -182.95C. The interactions between nitrogen molecules (N 2 ) are weaker, so the boiling point is lower. Interactions between non-polar molecules depend on the degree of electron fluctuation within the molecule. Choices: - antifreeze - dry ice - fluorocarbons - liquid nitrogen A:
Answer:
liquid nitrogen