Answer the following question given this paragraph: Direction is just as important as distance in describing motion. For example, if Mia told a friend how to reach the post office from her house, she couldn't just say, "go 3 kilometers. " The friend might end up at the park instead of the post office. Mia would have to be more specific. She could say, "go west for 2 kilometers and then go north for 1 kilometer. " When both distance and direction are considered, motion is a vector. A vector is a quantity that includes both size and direction. A vector is represented by an arrow. The length of the arrow represents distance. The way the arrow points shows direction. The red arrows in Figure above are vectors for Mia's route to the school and post office. If you want to learn more about vectors, watch the videos at these URLs:. Q: When describing motion, what factor is just as important as distance? Choices: - momentum - velocity - pressure - direction A:
direction
Answer the following question given this paragraph: The size of an object's image is larger (or smaller) than the object itself by its magnification, . The level of magnification is proportional to the ratio of and . An image that is double the size of the object would have magnification . Q: An image that is double the size of the object would have what? Choices: - stimulation - configuration - illumination - magnification A:
magnification
Q: Answer the following question given this paragraph: In this equation, two substances combine to make a single substance. This is a composition reaction. Two different substances react to make two new substances. This does not fit the definition of either a composition reaction or a decomposition reaction, so it is neither. In fact, you may recognize this as a double-replacement reaction. A single substance reacts to make multiple substances. This is a decomposition reaction. Q: What type of reaction causes two substances to combine to make a single substance? Choices: - component reaction - spontaneous mutation - metabolism - composition reaction A:
A: composition reaction
Question: Answer the following question given this paragraph: Conversion of Temperature Units We use the word temperature to refer to the hotness or coldness of a substance. One way we measure a change in temperature is to use the fact that most substances expand when their temperature increases and contract when their temperature decreases. The mercury or alcohol in a common glass thermometer changes its volume as the temperature changes. Because the volume of the liquid changes more than the volume of the glass, we can see the liquid expand when it gets warmer and contract when it gets cooler. To mark a scale on a thermometer, we need a set of reference values: Two of the most commonly used are the freezing and boiling temperatures of water at a specified atmospheric pressure. On the Celsius scale, 0 C is defined as the freezing temperature of water and 100 C as the boiling temperature of water. The space between the two temperatures is divided into 100 equal intervals, which we call degrees. On the Fahrenheit scale, the freezing point of water is defined as 32 F and the boiling temperature as 212 F. The space between these two points on a Fahrenheit thermometer is divided into 180 equal parts (degrees). Defining the Celsius and Fahrenheit temperature scales as described in the previous paragraph results in a slightly more complex relationship between temperature values on these two scales than for different units of measure for other properties. Most measurement units for a given property are directly proportional to one another (y = mx). Using familiar length units as one example: length in feet = 1 ft length in inches 12 in. Q: The mercury or alcohol in a common glass what changes its volume as the temperature changes? Choices: - calculator - compass - barometer - thermometer A:
Answer: thermometer
*Question*
Answer the following question given this paragraph: The range is the total spread of values. It gives you an idea of the variation in the measurements. The range is calculated by subtracting the smallest value from the largest value. For the data in Table above , the range in numbers of vehicles by type is: 150 - 50 = 100. Q: What is calculated by subtracting the smallest value from the largest value? Choices: - the sample - the density - the median - the range A:
**Answer**
the range
Q: Answer the following question given this paragraph: Renewable resources are natural resources that can be replaced in a relatively short period of time or are virtually limitless in supply. Renewable energy resources include sunlight, moving water, wind, biomass, and geothermal energy. Each of these energy resources is described in Table below . Resources such as sunlight and wind are limitless in supply, so they will never run out. Besides their availability, renewable energy resources also have the advantage of producing little if any pollution and not contributing to global warming. The technology needed to gather energy from renewable resources is currently expensive to install, but most of the resources themselves are free for the taking. Q: What are natural resources which can be replaced in a relatively short period called? Choices: - solvent resources - materials resources - replaceable resources - renewable resources A:
A: renewable resources