Measuring the World

Name:

Date:

Instructions: Explore the everyday science of clocks, calendars, miles, meters, and how we count and measure things.

1.
How many inches are in one foot?
A
10 inches
B
12 inches
C
14 inches
D
16 inches
2.
How many days are in a leap year?
A
364 days
B
365 days
C
366 days
D
367 days
3.
How many seconds are in one minute?
A
50 seconds
B
60 seconds
C
100 seconds
D
120 seconds
4.
On the Fahrenheit scale, at what temperature does water freeze?
A
0°F
B
32°F
C
100°F
D
212°F
5.
How many feet are in one mile?
A
2,500 feet
B
5,280 feet
C
6,000 feet
D
10,560 feet
6.
Which month of the year has the fewest days?
A
January
B
February
C
April
D
November
7.
How many ounces are in one pound?
A
8 ounces
B
12 ounces
C
16 ounces
D
20 ounces
8.
How many hours are in one full day?
A
12 hours
B
20 hours
C
24 hours
D
48 hours
9.
Roughly how many kilometers are equal to one mile?
A
0.6 kilometers
B
1.6 kilometers
C
2.4 kilometers
D
3.2 kilometers
10.
What does the prefix 'kilo-' mean in the metric system?
A
Ten
B
One hundred
C
One thousand
D
One million
11.
The metric system was originally developed in which country?
A
England
B
Germany
C
France
D
Italy
12.
A 'decade' is a period of how many years?
A
5 years
B
10 years
C
20 years
D
100 years
13.
Which instrument is used to measure atmospheric air pressure?
A
Thermometer
B
Hygrometer
C
Barometer
D
Altimeter
14.
The Gregorian calendar — the one most of the world uses today — was introduced in which century?
A
13th century (1200s)
B
14th century (1300s)
C
16th century (1500s)
D
18th century (1700s)
15.
The international standard unit of length — the meter — was originally defined as a fraction of what?
A
The radius of the Moon
B
The distance from the Earth to the Sun
C
The circumference of the Earth
D
The height of the Eiffel Tower

Answer Key

Question 1

B. 12 inches

One foot equals exactly 12 inches — a standard that has been used in the United States and United Kingdom for centuries. The word 'foot' originally came from the length of a human foot.

Question 2

C. 366 days

A leap year has 366 days because an extra day — February 29 — is added to keep our calendar aligned with Earth's orbit around the Sun, which takes about 365.25 days.

Question 3

B. 60 seconds

There are 60 seconds in one minute. This base-60 system for time was inherited from the ancient Babylonians, who used a counting system based on the number 60.

Question 4

B. 32°F

Water freezes at 32 degrees Fahrenheit, which is the same as 0 degrees Celsius. Water boils at 212°F (100°C) at sea level.

Question 5

B. 5,280 feet

One mile equals exactly 5,280 feet. This odd number dates back to the Roman 'mille passuum' (a thousand paces), which was later adjusted to fit neatly into the English furlong system.

Question 6

B. February

February is the shortest month, with just 28 days in a regular year and 29 in a leap year. All other months have 30 or 31 days.

Question 7

C. 16 ounces

There are 16 ounces in one pound. This is the avoirdupois system used in the United States for everyday weights like groceries and body weight.

Question 8

C. 24 hours

A full day (one Earth rotation) has 24 hours, which is why clocks cycle around twice each day. Ancient Egyptians were among the first to divide the day into 24 equal parts.

Question 9

B. 1.6 kilometers

One mile is approximately 1.6 kilometers (exactly 1.609 km). A handy trick: multiply miles by 1.6 to get a rough kilometer equivalent.

Question 10

C. One thousand

The prefix 'kilo-' means one thousand, which is why a kilogram equals 1,000 grams and a kilometer equals 1,000 meters. It comes from the Greek word 'khilioi' meaning thousand.

Question 11

C. France

France developed the metric system during the French Revolution in the 1790s, aiming to replace the confusing patchwork of local measurements with a single logical, decimal-based system.

Question 12

B. 10 years

A decade is 10 years. The word comes from the Greek 'dekas,' meaning a group of ten. A century is 100 years, and a millennium is 1,000 years.

Question 13

C. Barometer

A barometer measures atmospheric (air) pressure. Falling pressure often signals approaching storms, while rising pressure usually means fair weather ahead — making it a classic tool for forecasters.

Question 14

C. 16th century (1500s)

Pope Gregory XIII introduced the Gregorian calendar in 1582 to correct errors that had crept into the older Julian calendar. Britain and its colonies didn't adopt it until 1752.

Question 15

C. The circumference of the Earth

When France defined the meter in 1793, it was set as one ten-millionth of the distance from the equator to the North Pole. Today it is defined by the speed of light, but the Earth-based origin is a fascinating piece of scientific history.

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