Study+Guide

** Study Guide ** The mass doesn’t change from the earth to the moon. Mass is how much matter (stuff!) there is. Your matter doesn’t change just because you travel to the moon. The weight is the mass __plus__ the pull of gravity. The pull of gravity is less on the moon, so the weight would decrease since the pull of gravity on the mass is less on the moon. The volume is how much space the matter takes up. Suppose that there are 2 blocks of equal size. One of the blocks has many molecules smashed together, making the block very dense. The other block has fewer molecules smashed together and is less dense. (Remember, it is still the same size as the other block). The denser block will have more mass because it has more matter; the less dense block has fewer molecules so it has less mass.
 * Mass, Volume, Weight and Density **
 * 1**. What is mass? What tool is commonly used to measure it?
 * 2.** What is volume? How do you measure the volume of an irregularly shaped object?
 * 3**. What is density? What formula do we use to calculate density?
 * 4.** What is weight? What tool do we use to measure it?
 * 6.** A graduated cylinder has 30 ml of water in it. A small rock is dropped into the cylinder and the water is now up to the 34 ml line. What is the volume of the rock? What is the volume of the water? (**The volume of rock equals the difference between the beginning water level and the water level after the object is added. The volume of the water is the beginning water level**.) This method is called Liquid displacement (or water displacement).
 * 7.** What is the formula to measure the volume of a rectangular prism? (**L x W x H**)
 * 8.** How is it possible to make an object denser without changing its mass?
 * 9.** **Know the following measurement instruments:**
 * a balance scale is used to measure mass
 * a spring scale can be used to measure weight
 * A graduated cylinder can be used to measure volume
 * Density = Mass/Volume
 * 10. If you were to travel from the earth to the moon explain what would happen to your mass and to your weight?**
 * 11.** **How could equal volumes of different substances have different masses?**

** 12. ** If an object is LESS dense than water will it FLOAT or SINK? (circle o ne)

1/6 of 5000 grams ||
 * 13.** Suzy Q. finds the density of 50 milliliters (ml) of corn syrup with his students. After dividing the mass and volume, they arrive at a density of 1.4 grams per milliliter (g/ml). What should be the density of 100ml of corn syrup?
 * || 100 g/ml ||
 * || 1.4 g/ml ||
 * || 50 g/ml ||
 * || 2.8 g/ml ||
 * 14. ** How are mass and weight different? Choose TWO of the following:
 * || mass measures the pull of gravity on an object ||
 * || weight measures the pull of gravity on an object ||
 * || weight is the amount of matter in an object ||
 * || mass is the amount of matter in an object ||
 * 15.** Which of the following can you conclude about density?
 * || different liquids have the same densities ||
 * || different solids have the same densities ||
 * || some liquids can be more dense than some solids ||
 * 16.** A small box is 5 centimeters long, 2 centimeters wide, and 4 centimeters high. What is its volume?
 * || 40 cubic centimeters ||
 * || 11 cubic centimeters ||
 * || 40 milliliters ||
 * || 11 milliliters ||
 * 17.** A bowling ball has a MASS of 5,000 grams on Earth. On the moon the mass will be:
 * || more than 5,000 grams ||
 * || less than 5,000 grams ||
 * || 5,000 grams