Answer the following question given this paragraph: Air temperature changes as altitude increases. In some layers of the atmosphere, the temperature decreases. In other layers, it increases. You can see this in Figure below . Refer to this figure as you read about the layers below. Q: Air temperature changes as what increases? Choices: - pressure - density - salinity - altitude A:
altitude

Answer the following question given this paragraph: You might think that actions and reactions would cancel each other out like balanced forces do. Balanced forces, which are also equal and opposite, cancel each other out because they act on the same object. Action and reaction forces, in contrast, act on different objects, so they don't cancel each other out and, in fact, often result in motion. For example, in Figure above , the kangaroo's action acts on the ground, but the ground's reaction acts on the kangaroo. As a result, the kangaroo jumps away from the ground. One of the action-reaction examples in the Figure above does not result in motion. Do you know which one it is?. Q: What kind of equal and opposite forces cancel one another out when they act on the same object? Choices: - solid - exact - combined - balanced A:
balanced

Answer the following question given this paragraph: On the left side of the electromagnetic spectrum diagram are radio waves and microwaves. Radio waves have the longest wavelengths and lowest frequencies of all electromagnetic waves. They also have the least amount of energy. Q: Of all the electromagnetic waves, which have the lowest frequencies? Choices: - X-rays - ultraviolet rays - gamma rays - radio waves A:
radio waves

Answer the following question given this paragraph: It might be fun to lay out in the sun like these two girls are doing. But getting too much sun can be very dangerous. Overexposure to sunlight raises your risk for skin cancer. Q: The risk of what is raised by overexposure to the sun? Choices: - particle cancer - flux cancer - brain cancer - skin cancer A:
skin cancer