How can we measure the volume of this sample of water?

Volume of the water can be measured by ______________________________________________________

What isvolume?

• The amount of space an object takes up

• UNITS = L or cm3

Volume of liquids is determined by using a graduated cylinder

Volume is measured with liters

Measure at the MENISCUS

V =73 mL

V = 18 mL

V = 294 mL

V =6.6 mL

V =21.5 mL

How isVolume of

a solidmeasured

?

V = L x W x H

•Example: •L =2 cm, W=1 cm, H=1 cm

•V = L x W x H•V =2cm x 1cm x 1cm•V = 2 cm3

Example: V = ?

•V = L x W x H•V = 2cm x 3cm x 5cm

•V = 30 cm3

Water Displacement =

• to measure volume of an irregular shaped object

•Use graduated cylinder

•V = Volume of water with object – Volume of water

without object

How can we measure the volume of this rock?

V1 = 7 mL

V2= 9 mL

V = 9 – 7= 2

V = 2 mL

Example:

V1 =11.5 mL

V2 = 20 mL

V = 20 –11.5

V = 8.5 mL

What’s the volume?________mL150

What is the volume of the rock in the diagram to the left?

How could we determine the mass of the rock?

Triple beam balance

What ismass?

Amount of matter that an

object contains

What unit can be used to describe mass?

When you hit a volleyball, it might hurt just a bit as it bounces off your hands to go sailing over the net. That's because, although a volleyball isn't very massive, the mass it does have makes it resist your effort to change its motion. Bowling balls, on the other hand, possess much more mass than volleyballs do. If you tried to knock a bowling ball over the net, you just might break your arm!

How is massmeasured?

TRIPLE BEAM BALANCE

Mass = 542 gm

Mass = 137.4 gm

Mass = 25.4 gm

Mass = 79.4 gm

weight is a measurement of the gravitational force acting on an object

Weight varies based on location, whereas mass is constant.

If your weight on Earth is 100lbs, on the Moon it would be 16 lbs.

If your mass on Earth is 65Kg, your mass on the Moon would be 65Kg