Archimedes' Principle

• ENGLISH
• Secondary Education

Learning Outcomes

• identify and share my idea about the connections between scientific inventions and researches.
• explore about, recall and relate to Archimedes' principle and the buoyant force.
  
• identify and share the areas where Archimedes' principle can be applied.  
• identify the key details, the characters and the main idea of the poem while reading.
  
• appreciate the poem, and enjoy its rhythm and language.
  
• answer factual, inferential and referential questions based on the poem.

 

Are all the inventions results of some or the other extensive and thoughtful research?
Why, why not?

Can an invention ever be made accidentally or by chance? Why, why not?
Try listing one such invention,
if you feel there is a possibility.

Exploring:

ARCHIMEDES' PRINCIPLE and 

BUOYANT FORCE

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Let's Restate

Archimedes' principle, physical law of buoyancy, discovered by the ancient Greek mathematician and inventor Archimedes, states that any body completely or partially submerged in a fluid (gas or liquid) at rest is acted upon by an upward, or buoyant force, the magnitude of which is equal to the weight of the fluid.

Share any two places/things/situations/fields where the Archimedes' principle is applied?

Application of the principle

• Designing ships and submarines
• Lactometers based on Archimedes' principle are used to measure purity of a sample of milk.
• Hydrometers used to measure density of liquids are based on Archimedes' principle.
• Hot air balloons

LET'S LISTEN TO THE POEM!

Click here to listen to the audio

Did Archimedes discover the phenomenon of buoyancy by chance or on purpose?
What makes you think so?

Recall and state Archimedes'
observations in NOT MORE THAN 30 words.

According to you, how must have Archimedes proved the goldsmith's role in the crown-making?

SUCCESS CRITERIA:
NOW, I CAN:
* identify and share my idea about the connections between scientific inventions and researches.
* recall and relate to Archimedes' principle and the buoyant force.
* identify and share the areas where Archimedes' principle can be applied.
* identify the key details, the characters and the main idea of the poem while reading.
* appreciate the poem, and enjoy its rhythm and language.
* answer factual, inferential and referential questions based on the poem.

1. Strongly agree
2. Agree
3. Not sure
4. I need some help.

Learning Outcomes

• identify the key details, the characters and the main idea of the poem while reading.
• answer factual, inferential and referential questions based on the poem.

 

On the basis of your understanding of the poem fill in the blanks on the next few slides.

The king of Sicily asked the goldsmith to ___________.

The king of Sicily asked the goldsmith to make a crown with a lump of gold he provided.

The king suspected that the goldsmith had ___________.

The king suspected that the goldsmith had mixed a cheaper metal with the gold, so that he could sell the extra gold.

Archimedes understood the principle related to objects immersed in liquids when ___________.

Archimedes understood the principle related to objects immersed in liquids when he climbed into his bath and observed
water being displaced.

He had found out a way of ___________.

He had found out a way of testing the volume of an object.

A narrative poem like this one tells a story-in this case, the story of how Archimedes discovered the principle or law of buoyancy. How is it different from a prose narration of the same story? In other words, how is poetry different from prose?

Poetry (Verse) v/s Prose

1. Verse uses fewer words; however, more is expressed than the literal meanings of the words used.

2. The order of the words differs from the structure followed in sentences.

3. Verse has a rhythm which is created by a repeated pattern of line lengths and stress.

4. Verse often uses rhyme, which is the repetition of similar sounds or the same sound in two or more words, generally in the last words of lines in a poem.