Force, Weight, and Gravity
1. Near the Earth's surface, a 1 kg mass has a gravitational force on it of about 10 newtons.
2. This gravitational force by Earth on an object is also known as the objects weight.
3. All masses attract each other.
4. The greater the masses, the stronger the force.
5. The closer the masses, the stronger the force.
6. 'N' is the notation used to express newtons.
7. What is a gravitational field?
Gravitation field is a region in which a mass experiences a force due to gravitational attraction.
8. Gravitational field strength is represented by the symbol "g".
9. The SI unit of work is joule and it is denoted by "J".
10. Work done = force * distance moved in the direction of the force
11. If 5 N force moves an object 4 m, then calculate the work done.
'Beware Low-Flying Girls' by Katherine Rundelt
VOCABULARY
Fierce = Strong
Confetti = small pieces of coloured paper.
Irate (আইরেইট) = extremely angry
Bundled = warmly covered
Billow = fill with air and swell outwards
Swoop = to fly or glide downwards suddenly.
Scramble
Question/Answer
1. What did Odile do before starting her journey?
answer: She pulled the coat and boots and kissed her grandfather on the cheeks.
2. Why do you think Odile avoided flying during her journey?
answer: Odile avoided flying because the wind could drop suddenly and feared she might fall due to gravity.
3. "It was more of a scramble", what do the writer want to mean here?
answer: The writer meant that the climbing was getting difficult for her.
King Arthur and Knight of the Round Table
embrasure (এমব্রেঝার) = an opening in a castle (কাসল) through which arrow may be shot.
pagans = people who do not belong to any major religion.
chivalry (শিভ্যালরি) = the rules and customs of medieval (মেডিইভল) khighthood.
swear = to make an oath
summon = to call someone
enormous = very big
perilous = dangerous
knights = brave soldiers
Macbeth
Character Introduction
Macbeth: Main character
Lady Macbeth: Macbeth's wife
Duncan: King of Scotland
Banquo: Scotish general
Malcom and Donalbain: Duncan's sons
Macduff: Thane of Fife
The three witches
Describe Macbeths state of mind during the dagger scene?
During the dagger scene, Macbeth was nervous and confused. He was scared and so torn between right and wrong that he started hallucinating.
"Looks like the innocent flower, while she was indeed the serpent under it" - What does the line reveal about Lady Macbeth's character?
Keywords: ambitious, manipulative, more determined than Macbeth.
Answer: Lady Macbeth was an ambitious and manipulative person. She was more determined than Macbeth to kill the king. She goes perfect with the line because she pretended to be innocent, but in reality she was a manipulative and toxic woman who managed to manipulate her husband into killing the king.
Biology
1.7 Protoctists and prokaryotes: often single celled
Which parasitic organism causes malaria?
= Plasmodium.
Protoctist vs prokaryote
= if a unicellular organism has a nucleus, then it is a protoctist and not a prokaryote.
Difference between plant cell and animal cell.
Physics
After cobbling, an object
* What is the mass of a block of platinum with a volume of 0.02 m^3?
* A cubic tank with a side length of 2 m is filled with water. What is the mass of the water in the tank?
* An object has a mass of 20,400 kg and a volume of 1.5 m^3. Based on the table, what substance is the object made of?
Chemistry
Difference between Boiling and Evaporation:
| Boiling | Evaporation |
| 1. Boiling occurs at a fixed temperature. | 1. Evaporation occurs at any temperature below the boiling point. |
| 2. Bubbles form during boiling. | 2. No bubbles form during evaporation. |
| 3. Occurs throughout the liquid. | 3. Occurs only at the surface. |
If we compress a gas enough, what state does it turn into?
= If we compress a gas enough it turns into liquid.
Why does solid not flow but a liquid does, even though both have particles?
= In solid the particles are closely packed but in liquid the particles have a gap between them. So, liquids flow.
What state of matter has no definite shape but can have a definite volume?
= Liquid state of matter has no definite shape but can have a definite volume.
What causes a solid to melt into a liquid?
= Certain temperatue causes a solid to melt into a liquid.
If you put a balloon in the freezer, what happens to its size? Why?
= If we put a ballonn in the freezer, its size will decrease. Because gas molecules slow down in lower temperatue.
What is deposition? or Define deposition.
= Deposition is a process where gas changes into a solid directly without turning into a liquid when heat is reduced.
What is sublimation? or Define sublimation.
= Sublimation is a process where solid changes into a gas directly without turning into a liquid when heat is applied.
Mixture:
Mixture is a combination of two or more substances that are physically combined but not chemically bonded.
Can be separated by physical means.