A Good Read - Steam Train "Flying Scotsman"

http://www.straitstimes.com/world/europe/legendary-steam-train-flying-scotsman-returns-in-britain?xtor=CS3-17

[25/2] Science File & Revision for CA1

Science File
Science file has been returned to you today.
File in 2015 MCQ, 2015 Section B & 2014 MCQ papers.

Next Tuesday (1 Mar) Science Lesson
Bring back 2014 MCQ paper to go through Q22 to Q30.
Bring back 2015 Section B paper to go through Q43 & 44

Important reminders in your Science Revision

1. Gravitational Force vs Gravitational Potential Energy (MCQ 2014 paper: Q21)

• The amount of gravitational force acting on the javelin is the same at C, D and E. This force is constant as long as you're on earth.
• However, the gravitational potential energy will change. 
• At C, it has greater gravitational potential energy & therefore lesser kinetic energy. 
• At E, it will then have lesser gravitational potential energy as it is converted to greater kinetic energy. 
• This is similar to the Roller Coaster Example, pg 24 in your Energy activity book.

2. Cause, Effect & Purpose (MCQ 2014 paper: Q20)

• In Surface D...
• Cause: Frictional Force between the wheels of the toy car & the surface of the ramp is the least.
• Effect: The toy car is observed to roll down the ramp the fastest. / The toy car took the shortest time to roll down the ramp.
• Purpose: (Applying the experiment in the context of the bathroom floor tiles) It is the least suitable for making the surface of bathroom floor tiles.
• This is similar to the pg 7, Question 2 in your Interaction activity book.
• Whenever question asks to "Explain why", you will need to have the Cause & Effect in your answer. 
• Purpose will be needed when there is an application in another context.

[24/2] NSB, Revision & Practice Paper

Energy Activity Book

I've returned this book today for revision & Parents' Signature (at the content page)

Do use the notes inside for revision.

Bring back the book next Wed after your Science CA1 paper.

NSB - Conversion of Energy

More examples discussed today. If you have missed out, here's a copy. 

No. 8-11, you are to complete on your own by filling in the types of energy in the conversion process.

Practice Paper Answers

Here are the answers to the rest of the questions. I'm left with Q43 & 44 to go through tomorrow.

Remember to bring the paper tomorrow.

Practice Paper (MCQ) 2014 & 2015

This is a reminder to bring your MCQ paper tomorrow for going through in class.

Excellent pupils' work in NSB

Science LJ to Garden By the Bay

[18/2] Interactions AB (For Parents' Signature) & Homework

Interactions Activity Book
Bring home this book for CA1 Revision & Parents' Signature (on the content page)
Bring back the book on Week 9 (2 Mar, Wednesday) after your CA1 Science Paper.

Homework

2015 Practice Paper (MCQ)

• Complete Q28-30 (Energy Conversion Questions)
• Bring back the paper next Wednesday to go through Q25-39.

2014 Practice Paper (MCQ) 

• Cross out Q8-12 (Food Chain/Food Web Questions)
• Complete all the rest of the questions
• Bring back the paper next Thursday for going through in class.

Reminder: Hand in NSB HW (Conversion of Energy from one form to another)

Your task is to read up and write down as many examples on how energy is converted from one form to another. 

- you may use the various types of power stations (application of energy conversion) we have discussed so far.

This task is due tomorrow, 19 Feb. Hand in to Science Monitors.

[17/2] NSB Homework & Some Misconceptions

Energy Activity 2 Experiment - Learning Points

• As the height of the ramp increases, the distance traveled by the car increases.
• As the height of the ramp increases, the amount of gravitational potential energy increases.
• As the toy car moves down the ramp, gravitational potential energy is converted to kinetic energy.
• The greater the amount of gravitational potential energy of the toy car at the top of the ramp, the greater the amount of kinetic energy that is converted into, causing the toy car to move down the ramp faster.

NSB - Difference between Photosynthesis & Respiration

Misconception 1: We use our nose for respiration while plants use their stomata

• Respiration for both plants and animals takes place in all cells.

Misconception 2: Respiration only takes place at night.

• Respiration takes place all the time, throughout the day and night.

Misconception 3: Photosynthesis only takes place in the day.

• Photosynthesis only takes place in the presence of light. If there is no sunlight in the day, photosynthesis will not take place.

Summary table of difference

Homework: NSB - Conversion of Energy from one form to another

We have discussed the following examples on how energy is converted from one form to another.

• During photosynthesis
• During respiration
• When a ball falls from a height

Your task is to read up and write down as many examples on how energy is converted from one form to another. 

- you may use the various types of power stations (application of energy conversion) we have discussed so far.

This task is due Friday, 19 Feb.


Reminder - Things to bring tomorrow.

• Bring along your 2015 Practice Paper (MCQ). We will continue to go through the answers tomorrow.
• [Only for pupils who have not handed in] Bring 2015 Practice Paper (Section B) tomorrow.