Exploring Density Measuring Mass and Volume of Obj

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GizmosName:Date:Student Exploration: Density LaboratoryDirections: Follow the instructions to go through the simulation. Respond to the questions andprompts in the orange boxes.Vocabulary: buoyancy, density, graduated cylinder, mass, matter, scale, volumePrior Knowledge Questions (Do these BEFORE using the Gizmo.)1.Of the objects below, circle i »the ones you think would float in water. Click on the image and select EDITto use the drawing tool.2.Why do some objects float, while others sink?I think some sink because they have to much densityGizmo Warm-upThe Density Laboratory Gizmo allows you to measure a variety of objects, then dropthem in water (or other liquid) to see if they sink or float.1.A n objectsmassis the amount ofmatterit contains. Mass can be measured with acalibrated scale like the one shown in the Gizmo. Drag the first object onto theScale.(This is object 1 .)What isthemass of object1?19.&g2.A n objectsvolumeis the amount of space it takes up. The volume of an irregular object can be measuredby how much water it displaces in a graduatedcylinderA. What is the initial volume of water in the cylinder?400mlB. Place object 1 into the cylinder. What is the volume in the cylinder now?414.2 mlIC. What is the volume of the object?14.2Reproduction h x enucabonal use only. PiJilic sharing o r posting prahiiited. C ' 2 D 2 0 ErplareLenrning™ All rights reserved

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Note: While milliliters (mL) are used to measure liquid volumes, the equivalent unit cubic centimeters (cm3) areused for solids. Therefore, writethevolumeofobject 1 in cm3Get the Gizmo ready•Drag object 1 back to the shelf.•Check that Liquid density is set to 1.0 g/mL.Activity A:Float or sink?Question: How can you predict whether an object will float or sink?1.Observe: Experiment with the different objects in the Gizmo. Observe the mass and volume of each object,then drag it into the Beakerof liquidto see if it floats or sinks. (Notice a pin holds objects in the graduatedcylinder, whether they sink or float.} Try to determine what the floating objects have in common and whatthe sinking objects have in common.2.Form hypothesis: Compare the floating objects, then do the same for the sinking objects.the most of the floating objects are triangles andround objectsheavy objects don't sink what they have incommon is that the mass of the object is a highmassA. What do the floating objects have in common?B. What do the sinking objects have in common?3.Collect data: Measure the mass and volume of objects 1 through 12, and record whether they float or sinkin the table below. Leave the last column blank fbr now.ObjectMass {g)Volume (cm3)Float or sink?119.514.2sink21 1 . 19.7sink34.35.6float4134.37.8sink53.93.5sink678.729.2sink72.320.8float824.425.7float999.643.9sink1 04 2 . 160.3float sink1 165.541.2sink12104.3114.1floatReproduction lor en ucabonnl use only. Public sharing a r posting pnahtribed. C' 2020 BcpIareLeernirig'™ All rights reserved

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