Volume

Volume:______________________________ _______________________________________ The amount of space an object takes up. Graduated cylinders and beakers measure volume. Volume

Volume can also be measured using the equation (L x W x H). For example, a cube measuring 3.0 cm would have a volume of 27 cm 3. Volume 3.0 cm Volume = L x W x H Volume = 3 x 3 x 3 Volume = 27cm 3

English vs. Metric Units Which is larger? A. 1 liter or 1 gallon B. 1 liter or 1 quart C. 1 milliliter or 1 fluid ounce 1 gallon = 3.79 liter It would take approximately 3 ¾ 1-liter bottles to equal a gallon. 1 fl oz = ml 1 12-oz can of soda would equal approximately 355 ml. 1 quart = liters

Metric Units The base unit of volume in the metric system is the liter and is represented by L or l. 1 liter is equal to one cubic decimeter Metric Units 1 liter (L) = 1000 milliliters (mL) 1 milliliter (mL) = 1 cm 3 (or cc) = 1 gram* Which is larger? A. 1 liter or 1500 milliliters B. 200 milliliters or 1.2 liters C. 12 cm 3 or 1.2 milliliters* Click the image to watch a short video about volume.

Measuring Volume We will be using graduated cylinders to find the volume of liquids and other objects. Read the measurement based on the bottom of the meniscus or curve. When using a real cylinder, make sure you are eye-level with the level of the water. What is the volume of water in the cylinder? _____mL What causes the meniscus? A concave meniscus occurs when the molecules of the liquid attract those of the container. The glass attracts the water on the sides. 43

Measuring Liquid Volume What is the volume of water in each cylinder? In mL… Pay attention to the scales for each cylinder.

Measuring Solid Volume 10 cm 9 cm 8 cm We can measure the volume of regular object using the formula length x width x height. _____ X _____ X _____ = _____ We can measure the volume of irregular object using water displacement. Amount of H 2 O with object = ______ About of H 2 O without object = ______ Difference = Volume = ______ mL 200 mL 65 mL _______ - _______ = _____ 265 mL200 mL65 mL

Trial 1: Measuring Volume using LxWxH Using a RULER measure the length, width, and height (in centimeters) of the block below and find the total volume. L x W x H = Volume ________ x ________ x ________ = _______cm 3

Trial 2: Combining Volume Working with graduated cylinders, carry out the following procedures and record your data. Measure 15 mL of blue water into a graduated cylinder then pour it into a beaker Measure 20 mL of yellow water into a graduated cylinder then pour it into the same beaker What is the color of the water in the beaker? _____________________________________ What is the total volume of the water in the beaker? ______________________________mL

Trial 3: Displacement Method with Floating Object How do you find the volume of a floating object? We use the displacement method. Follow the following procedure for finding a floating object’s volume. Procedure: Fill graduated cylinder with water to 20mL Add floating object Use care to submerge the object – make sure it is fully under water. Record new graduated cylinder volume ________________ (add units) Take new volume, subtract it from original volume What is the volume of the marble? ________________ (add units)

Trial 4: Displacement Method with Sinking Object How do you find the volume of a marble? We use the displacement method. Follow the following procedure for finding a marbles volume. Procedure: Fill Graduated Cylinder with water to 20mL Add Marble Record new Graduated Cylinder Volume ________________ (add units) Take new volume, subtract it from original volume What is the volume of the marble? ________________ (add units)