Archimedes Principle Class VIII

• English

Learning Outcome 

• Understand and Explain Archimede’s principle and buoyant force.
  
• 
  Identify areas where the principle can be applied.    
• Identify details, characters & main ideas while reading.
  
• appreciate a poem, and enjoy its rhythm and language.
  
• answer factual, inferential, referential questions.
  

 

Do you know any famous scientists and their discoveries? Share some examples with the class.

What is Archimedes principle?
Have you heard of the term Buoyant force?

Let's Restate

Archimedes' principle, physical law of buoyancy, discovered by the ancient Greek mathematician and inventor Archimedes, stating 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/situation where 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.

E- Recitation 

Using OUP

The rhyme scheme of the poem is

1. aabb
2. aabc
3. abcd
4. abbc

RTC 1

As he realized, with joy. his long-wished-for dream.

He found the upthrust, produced on a body's base, 

to be equal in weight to the water displaced.

Who is 'he' in the above lines?

1. Sicilian king
2. Archimedes
3. goldsmith
4. none of these

What was 'he' doing at the moment?

1. resting in the room
2. about to take a bath
3. talking to the goldsmith

He noticed __________ climbing into the bathtub.

1. water beginning to rise
2. his debts settling
3. goldsmith's disloyalty

RTC 2

The goldsmith's eye made the King suspect

That he'd made up the weight with some cheaper metal

And stolen some gold, that his debts he might settle.

What made the king suspect?

The weight of _______ has been made with some cheaper metal.

1. crown
2. bathtub
3. ring

Identify the rhyming words in the above lines.

Identify poetic devices in the first and second stanza. 

What had the Sicilian King ordered? 

 Why did the king suspect that the jeweller had cheated him? 

Expected Learning Goal

• Frame their own answers with the help of value points.
  

• State the value of remarkable discoveries that can be made through everyday activities in life and answer evaluative questions.

Summaries the poem highlighting the principle.

Elaborate the central idea of the poem. 

It is said that the king had the mixed feeling when he got the news. What would he have felt happy about? What would his feelings have been towards Goldsmith? What would he have done on account of these different feelings.