Table of Contents
- 1 Why body parts are not used for measurement?
- 2 What body parts are used for measurements?
- 3 Which of the following Cannot be used for measurement of time?
- 4 Why Cannot we use a sand clock to measure time of the day?
- 5 Where did the idea of measurements come from?
- 6 Are there any body parts that are the same size?
Why body parts are not used for measurement?
Body parts have different sizes from person to person and hence the value varies. Since there is no uniformity or accuracy in the reading, body parts should not be used for the correct measurement of an object.
What body parts are used for measurements?
Yes, your body — and its various parts — can serve as a quick length estimator. Your hand: The width of your palm is about 4 inches (10 centimeters). Your foot: An average foot is about 12 inches long. Your forearm from elbow to fingertip: Your forearm is about 1.5 feet (46 centimeters).
What are the modern ways of measuring time?
5 Tools We Use to Measure Time
- Sundials.
- Water Clocks.
- Mechanical Clocks.
- Quartz Clocks.
- Atomic Clocks.
Which of this are the body parts used by the people in ancient times to measure objects?
The cubit was used excessively by Egyptians in the ancient times to measure various objects. The cubit is approximately 18-22 inches long. The cubit extends from the elbow to the middle finger. In ancient Egypt the people used their cubits to roughly measure various objects.
Which of the following Cannot be used for measurement of time?
Explanation: Blinking of eye is not a periodic phenomenon. Eyes does not blink at a fixed interval of time. Hence Blinking of eyes cannot be used for measurement of time.
Why Cannot we use a sand clock to measure time of the day?
Answer: nowadays we cannot use sand clock to measure time of the day because there is an electric watch for timinng . p and many type of the watch is available for us but sand clock is also watch but it is old model.
Why footstep is an unreliable measure of length?
Answer: (b) it varies from person to person. The footstep as a measure of length is unreliable measure of length because different people have different foot sizes.
How are body parts used to measure things?
The thumb measures 1 inch which is now the basis of measurement. Long before the thumb would be used to measure almost everything. Example- Carpenters use their thumb to measure small, insignificant measurements. Measurement using body parts was often done in the past and was highly useful.
Where did the idea of measurements come from?
Origins of Measurements. In ancient times, the body ruled when it came to measuring. The length of a foot, the width of a finger, and the distance of a step were all accepted measurements. Inch: At first an inch was the width of a man’s thumb. In the 14th century, King Edward II of England ruled that 1 inch equalled 3 grains
Are there any body parts that are the same size?
No two body parts on any human are exactly the same length. The foot is a standardised measurement of approximately 30.48 centimetres; this does not mean that every human foot, or any human foot, is 30.48 centimetres. Not really because unless you all have the same size body parts or put them on average, like as average thumb 1.5 inch
Why are hands not used as standard units of measurement?
Say we are using “hands” as a measure. One individuals hand will likely not be the same as another persons hands, therefore if we were building a wall 50 hands tall, the actual sizes of the wall would be different. Because they’re different in each person.