Review+1+for+Density

Name: Date: 8th Grade Science – STEM Middle Academy – Mr. Condon Block: Review for Test on Density, Mass, Volume, & Scientific Method
 * 1) Density is
 * 2) Property of matter c. Measured at room temperature
 * 3) Matter in a given space d. All of the Above


 * 1) Which of the following tools can be used to measure mass?
 * 2) Triple beam balance c. Metric Ruler
 * 3) Graduated Cylinder d. All of the Above


 * 1) A cylinder's radius is measured to 4.5cm. Using rules for significant digits, which of the following is the most correct measure of its volume?
 * 2) 56.4 cm3 b. 56.456925 cm3 c. 56 cm3 d. 56.46 cm3


 * 1) Calculate the density of an object with a mass of 100grams and a volume of 15mL. Show your Work – from formula to solution, don’t forget the units of measure.


 * 1) The object in question 4 is cut in half. What would be the resulting density of either half of the object?
 * 2) The same as the original c. half of the original
 * 3) Twice the original since its only half the volume d. Not enough information


 * 1) What are the units of measure for the following:
 * 2) Volume:  or
 * 3) Mass:
 * 4) Density:


 * 1) When heat is added to an object, its mass does not change, but its volume increases. What happens to its density?


 * 1) On your upcoming you are given a really cool piece of gold jewelry. The gift giver tells you it is pure gold, but you are skeptical. You know that gold has a density of 19.3 g/cm3. When you mass the object on a scale, you get a reading of 4.5 grams. What would the volume be if it is truly gold? Show your work.


 * 1) So now you want to know if the gold jewelry mentioned in question #8 is really gold, but it is not a regular solid, like a cube or cylinder. Describe a way that you might find the object’s volume without destroying the piece of jewelry.


 * 1) A scientist wants to know how temperature changes as you go up a mountainside. He climbs the mountain and stops every 500 feet in elevation and measures the air temperature.
 * 2) The Independent Variable is
 * 3) The dependent variable is


 * 1) How might the scientist do multiple trials for this experiment?


 * 1) Why should all experiments use multiple trials?


 * 1) Here are two data points that the scientist gathered (0, 20) and (1, 15). Calculate the slope of this line. Show your work.


 * 1) Slope represents the relationship between two variables, in this case elevation and temperature. Is this a positive or negative relationship?  So now complete the sentence: As the elevation increases, the air temperature


 * 1) Using the data above, write the equation for the line that would represent these points?


 * 1) What would be the temperature at an elevation of 2? Show your work.