measurement review

Measurement Review

What is the definition of volume?The amount of space an

object takes up.

What is the name of the instrument used to measure the volume of a liquid?

Graduated cylinder

How is the volume of a liquid measured? Units?

Use a graduated cylinder.mL or L

How is the volume of a regular solid measured? Units?

length x width x heightcm3

3cm

5cm

2cm

3 x 2 x 5 =

30cm3

Measure the volume of the liquid to the right.

67mL

Measure the volume of the liquid to the left.

21mL

Measure the volume of the liquid to the right.

Measure the volume of the liquid to the left.

2mL 49mL

1. What is the volume of this toy dinosaur?

0.8mL (5.6mL – 4.8mL)

2. What is the name of this method?

displacement

1. What is the definition of mass? The amount of matter in an object.

2. What is the name of the instrument used to measure mass? triple beam balance

3. What are the units used to measure mass?

grams

Mass = 137.4 gm

Temperature:When using the Celsius scale:

water freezes at0°C

water boils = 100°C

human body temperature is 37°C

10.3cm

103mm

11.3cm

113mm11.7cm117mm

12.5cm125mm

13.2cm132mm

14.3cm143mm

Determine the cm length at each letter to the nearest tenth. Determine the mm length at each letter to the nearest whole number.

0 1 2 3 4cm

8mm

What is the length of the object in millimeters? Centimeters?

.8cm

0 1 2 3 4cm

What is the length of the object in centimeters? Millimeters?

2.8cm28mm

1. What is density? Mass per unit volume

2. How is the density of an object measured?

Density = mass/volume

1. What is the density of one cup of water?

1g/mL

2. What is the density of half a cup of water?

1g/mL

1. What is the density of a 100gram object with a volume of 20 milliliters?

5g/ml

2. The object above was cut into three pieces. What is the density of one of those pieces?

5g/ml

Explain why an object placed in a glass of water floats.

The object has a density less than the density of water (1g/ml).

Explain why an object placed in a glass of water sinks.

The object has a density more than the density of water (1g/ml).

Below is a list of the densities of different object. Will each one float or sink in water?

1. 0.38 g/cm3

2. 1.7 g/cm3

3. 1.2 g/cm3

4. 0.99 g/cm3

5. 100 g/cm3

float

float

sinksink

sink

Measurement Units

Length

Mass

Volume of a regular solid

Volume of a liquid

Density of a solid

Density of a liquid

mm, cm, m, km

g

cm3

mL or L

g/cm3

g/mL

Identify the meaning of each prefix.

Kilo = Centi = Milli =

1000.01.001

1 kilometer (km) = meter

1 centimeter (cm) = meter

1 kilogram (kg) = grams1 milligram (mg) = gram

1 kiloliter (kl) = liters1 centigram (cg) = gram1 millimeter (mm)= meter

1000

1000

1000 0.01

0.01

0.001

0.001

CONVERSIONS

KILO (k)

HECTO

(h) DECA (da)

METER (m)

DECI (d) CENTI

(c) MILLI (m)

Complete the following conversion:

21hm = ____d

21. = 21000d0 0 0

Complete the following conversion:

12cm = ____m

12. = .12m

Complete the following conversion:.45m = ____ km

.45000 = .00045km

Complete the following conversion:

6.3daL = ____ cm

6.3 0 0 = 6300cm