Absent

DENSITY/CONVECTION CURRENT LAB

InstructionsStudents will view the slides as if they

were actually doing the lab in class.Students will record their answers down

in the geosphere packets pages 9-12.There are two parts to this lab

Question and Purpose of the labPurpose: to understand how convection

currents inside Earth affect tectonic platesQuestion: How are density and convection

currents related?

Part 1: DensityDefinition: mass divided by volume or the amount of mass in a give volume

Steps 1-

• Find the mass of the empty beaker

• Recorded in data table found on page 10

Step 2-

• Filled the beaker with 100 mL of water and then found the mass of the beaker plus water.

• Recorded in data table found on page 10

Step 3-• Find the mass of the second empty beaker• Recorded in data table found on page 10

Step 4-

• Filled the empty beaker with 100 mL of oil and then found the mass of the beaker plus oil.

• Recorded in data table found on page 10

Step 5-

• Find the mass of the liquids along•Subtract the mass of the liquid plus the beaker from the mass of the beaker alone.•Recorded in data table found on page 10

Step 6-• Find the density of each liquid by dividing the mass of the liquid alone by its volume•Hint the volume of each liquid is 100 mL•Recorded in data table found on page 10

Step 7-• Write a hypothesis of what will happen when the

oil is poured into the water on question 8 on page 10. Don’t forget to put the why!

Step 8-• The oil was gently poured

into the water beaker.• Answer question 10 on

page 10.

Step 9-• Skip to question 14 on page 11 of your geosphere

packet. • Write your hypothesis and reason why for the

wooden disk.

Step 11-• The wooden disk was put gently into the beaker.• Answer question 16 on page 11

Step 12-• Write your hypothesis and reason why for the ice

cube. The ice cubes were colored green so they were easier to see.

Step 13-• Placed the ice cube

gently into the beaker.• Answer question 13• Answer question 17

Part 2: Convection Currents

InstructionsPlease go to the following YouTube link to watch a

convection current. After watching it answer the questions found on page 12 of your geosphere packet.http://www.youtube.com/watch?v=7xWWowXtuvA

The tank is on two buckets. One side is cold the other side is hot.

Some of the questions ask about pepper, which was not demonstrated in the video. Please imagine that pepper was sprinkled on top.Hint with the pepper questions, which way is the

water moving.