MEASURE & UNITS

MEASURE&

UNITS

LENGTH

Mile

LENGTH

Mile

Miles are often used to measure long distances where we would use kilometers in Spain.For instance, distance between cities is measured in miles.Car speed is also measured in miles per hour (mph).

A mile is equivalent to 1609.344 m.

1 mile = 1.6 km

LENGTH

Yard

LENGTH

Yard A yard (abbreviation: yd) is the basic unit of length used in the UK and the USA.One yard is equal to 0.9144 meters.One meter is equal to 1.094 yards.

“He missed the shot by less than a yard”“My house is only a couple hundred yards away”

LENGTH

Feet

LENGTH

FeetA foot (abbreviation: ft) is defined as a third of a yard.

1 yard = 3 feet1 foot = 0.9144 m : 3 = 0.3048 m = 30.48

cmFeet are divided in inches. There are twelve inches in one foot.

1 foot = 12 inches1 yard = 36 inches1 inch = 2.54 cm

LENGTH

Exercise 1

What is the speed limit in kilometers per hour?

What is the actual speed of the car?

LENGTH

Exercise 2

We see this sign at one side of the road.

What does it mean?

LENGTH

Exercise 3 Pau Gasol and Ricky Rubio are two Spanish basketball players.Pau is a very tall man. He is 7 ft. tall.Ricky is only 6 ft. 4 in. tall.Therefore, Pau is 8 inches taller than Ricky.How much is that in meters?

How tall are you?

LENGTH

Exercise 3: How tall are you?

I am 165 cm tall

165 : 30 = 5

remainder =15

5 feet

15 : 2.5 = 6 inches

I am 5 ft. 6 in. tall

MASS

MASS

Pound A pound (abb.: lb) is an unit of weight with a long history.The word pound comes from the Latin word pendere, meaning “to weigh”. The Latin word libra means balance and it also describes a Roman unit of mass similar to a pound. This is the origin of the abbreviation “lb” for the pound.One pound is equal to exactly 453.59237 grams. We round it by 453.6 g.Sometimes, we can estimate 1 lb = ½ kg

MASS

OunceThere are sixteen ounces (oz.) in one pound.

16 oz. = 1 lb1 oz. = 453.6 : 16 = 28.35 g

Ounces are frequently used in grocery stores and supermarkets.

MASS

Stone A stone (st) is an unit of weight and mass, equal to 14 pounds.

1 st = 14 lb = 6.35 kg

It is used to express human body weight (only in the UK and Ireland).

Example: John weighs 11 st 4 lb. John weighs 158 pounds. John weighs 71.7 kg.

MASS

Exercise 4 We want to buy some fruit in the supermarket. The price of one pound is $2.50What is the price of 1 kg?

We have bought 2 lb 6 oz. How much do we have to pay?

MASS

Exercise 5 How many stones are in 112 pounds?

How many ounces are there in 3 lb?

Complete:½ lb = ___ ounces¼ lb = ___ ounces

VOLUME

VOLUME

GallonA gallon is an unit of volume. Its exact value depends on wether we are in the UK or the USA.

1 US gallon = 3.785 litres1 UK gallon = 4.546 litres.

VOLUME

1 quart = ¼ gallon

1 pint = ½ quart

1 quart = 946 ml1 pint = 473 ml

16 US fl.oz.= 1 pint

1 US fl.oz. = 29.6 ml

Exercise 6

In the picture you can see the price of one gallon of gas.

1 gallon = $ 3.47In Spain, one liter of gas costs 1.42 € Is gas more expensive or cheaper in the US? How much?

VOLUME

Exercise 7In the picture you can see the average mileage of an US car.1 gallon = 40.2 milesIn Europe we measure the mileage the other way around:

100 km = 4.5 liters Can you convert that mileage into liters per 100 km?

VOLUME

VOLUME

VOLUME

AREA

Acre The acre is a unit of area.One acre is equal to 4.84 squared yards or 43.56 squared feet.One acre is, more or less, a football field.

1 acre = 4047 m2

1 acre = 0.4047 ha

TEMPERATURE

TEMPERATURE

Fahrenheit Temperature can be measured in Fahrenheit degrees. For example, the weather forecast can predict a maximum temperature of 85 ºF in a nice spring day.

0º C = 32 ºF 100 ºC = 212 ºF. Celsius (C) Fahrenheit (F):

F = 1.8 · C + 32Fahrenheit (F) Celsius (C)

C= (F – 32) / 1.8

TEMPERATURE

TEMPERATURE

Exercise 9

TEMPERATURE

ºF ºC

Boiling water 100 ºC

Ice 32 ºF

Kitchen oven 220 ºC

Human body 96.8 ºF

Hot summer day

45 ºC

Cold winter night

28 ºF

Fill in the gaps:

SUMMARY

LENGTH A mile is equivalent to 1.6 km.A yard is equal to 0.9 mThere are three feet in a yard. A foot is equal to 30 cm.An inch is equal to 2.5 cm. 12 in = 1 ft

MASS A pound is a little bit less than ½ kgThere are 16 ounces in a pound.A stone is equal to 14 pounds

SUMMARY

VOLUME The basic unite of volume is the gallon.1 gallon = 4 quarts1 quart = 2 pints1 pint = 16 fl. oz. (fluid ounces)

AREA An acre is an unit of area.One acre is equal to 0.4 ha

TEMPERATURE Temperature is measured in Fahrenheit degrees.

0 ºC = 32 º FC = (F - 32) / 1.8