[28/1] Homework: NSB P5 Revision Concept Map + Read up Energy TB

Read, Revise & Study P5 Cycles Chapter 2: Reproduction in Flowering Plants

• Re-read the content in the textbook.
• Revise by doing a concept map of the topic on Reproduction in Flowering Plants.
• Study by ensuring you remember all the concepts correctly.

Homework: P5 Revision Concept Map in NSB

• Complete 1 concept map for Reproduction in Flowering Plants (Include the process of Germination, Pollination, Fertilisation and Seed Dispersal)
• Do not merely copy the mind-map from the textbook. Consolidate all the important concepts under this topic. 

Homework: Read up Energy TB

We will be starting Energy next week.
Read up Chapter 1: Energy in Food. Find out more about what is an iodine test for Starch. We will be carrying out the practical lab session next Wednesday on iodine test.
Reminder:
Bring a food item (e.g. biscuit, different types of bread, potato, carrot, ginger, onion, etc... ) for next Wednesday's Lab session on Iodine Test. We will be testing out the presence of starch in the items that you'll be bringing.

Deadline for NSB

• Monday, 1 Feb
• Remember to bring. Science Monitors will collect by recess time on Monday.

[27/1] More on Forces & NSB Homework: Magnetic Force

Revision Concept Maps

Gravitational Force

Here's a summary on the concept of gravitational force. 

Copy this into your NSB & fill in the blanks with the correct words.

Homework: Concept Map on Magnetic Force

Your task is to complete a detailed concept map on Magnetic Force. This is a revision of your P3 Interaction Magnet Topic.
(The concept map on gravitational force would have shown you how a detailed concept map looks like.)

This is due tomorrow, 28 Jan.

Reminder: Things to Bring Tomorrow

• Energy Textbook (The whole book of Energy will be covered in Term 1. The rest of Interaction topics will be covered in Term 2)
• Energy Activity Book (For pupils who have not placed them at the shelves in the classroom)

Video: Air Resistance & Gravity

Can you explain why the crushed paper drops faster than the blank piece of paper, even though both are the same size and mass?

Can you explain why the egg did not break when attached to the parachute?

Video: Monster Lodestone

Where is the magnetic force in this lodestone?
Is it a pushing or pulling magnetic force?
Does the lodestone has a "North" & "South" Pole?

[26/1] Homework: Topical Worksheet 1 (Forces)

I'll go through the marked selected questions in Topicial WS 1 tomorrow. In the meantime, if you've gotten it wrong, check if it's careless mistake, re-attempt the questions and try again.

Complete the rest of the questions in Topical WS 1 by tomorrow.

More on Gravitational Force

Gravitational Force vs Gravitational Potential Energy

• Gravitational Force - A constant force regardless wherever you are on Earth. It must be with referenced to the centre of the Earth.
• Use the term "Gravitational Force" instead of gravity. Both are the same meaning.
• Gravitational Force exists not only to the centre of the Earth but also between two objects. (Even though this force is almost negligible, it still exists)

• Gravitational Potential Energy - An energy that exists only if you are at a certain height.

Misconception: There is no force acting on stationary objects.

On a straight platform

• There is gravitational force acting on the object, therefore, it doesn't move.

On a ramp with object not moving

• There is gravitational force and frictional force acting on it. This prevents the object from rolling forward or backwards.

[21/1] Homework: NSB Revision Concept Maps & Practice Paper (Selected Questions)

Read, Revise & Study P5 Cycles Chapter 4, 5 & 6.

• Re-read the content in the textbook.
• Revise by doing a concept map of the topic on Water Cycle & Water is Precious.
• Study by ensuring you remember all the concepts correctly.

Homework: P5 Revision Concept Maps

• Complete 1 concept map for Water Cycle. (Include the process of evaporation and condensation as well as the 3 states of water - Water, Water vapour, Water droplets, snow, rain, etc)
• Complete 1 concept map for Water is Precious. (Include how it is precious to our body and plants and why is water precious?)

Practice Paper [2015 Section B]
After revising P5 Water Cycle, complete ONLY Questions 31, 32, 33, 34, 36, 38 & 41

Deadline for both tasks

• Monday, 25 Jan. Remember to bring. Science Monitor will collect by recess time on Monday.

Experiment: Activity 2 - Friction and types of surface

Homework

• Complete page pg 6 & 7, all questions. We shall go through the answers in class tomorrow. 
• Remember to bring back your activity book tomorrow.

Important things to take note in this experiment

In answering open-ended questions, when asked to "Explain your answer.", always remember to state the cause (scientific reason) and effect.

• E.g. Which of the above liquid allowed the metal ball to fall through it more easily? Explain your answer.
• Liquid X. 
• Cause => The ball experience lesser friction between its surface and the liquid.
• Effect => Ball falls through Liquid X faster than Liquid Y.

Friction always exist between 2 surface. Always remember to state the it is between two surfaces (identify the surfaces).

Misconception: Objects have friction on their surfaces. Friction is a property of an object. (e.g. Wood is rough so it has a lot of friction. Fabric is smooth so it has no friction)

• Objects do not have friction on their surface.
• Friction is a force that exists between two surfaces that are in contact with each other. 
• Frictional force acts on both rough and smooth surface.

Science Homework & Spring Stimulation Website

Today's Homework
Interaction Activity Book, Topical Worksheet 1
Complete only these selected questions
Remember to highlight the keywords as you read the questions. Use Elimination method for all options in MCQs.
Section A: Q1, 3, 5, 6, 8
Section B: Q11, 12, 14 (pg 18-20 & 22)

Interactive Stimulation on Masses & Springs
https://phet.colorado.edu/en/simulation/mass-spring-lab 
Today, we learnt about elastic spring force using the above interactive stimulation. These were the observations made in our discussion:

1. The more friction there is in the spring, the less elastic the spring will be / the faster the spring will come to a stop.
2. The harder Spring 3 is, the less elastic the spring will be / the faster the spring comes to a stop.
3. The heavier the weight on the spring, the longer the spring will be extended.
4. The greater the elastic spring force exerted when we release the weight, the greater the heat produce in the form of Thermal Energy.

Video 1: Force, Work and Energy Relationship
Post in the comment below how is force, work and energy different from one another.

Video 2: Gravity, Force & Work
Post in the comment below what you think gravity is.

NSB Homework: Word Splash on Frictional Force

We have discussed the following points on Frictional Force today.

• Friction is a force that opposes motion.
• Friction is produced when two surfaces are rubbed against each other.
• Friction acts in an opposite direction to the movement of the object.
• We can apply lubricants like oil or grease to reduce friction.

We have also brainstormed as a class words related to Frictional Force. (Word Splash)

Your task is to:

• Continue to add on more words related to Frictional Force in your Word Splash.
• Use two or more words from the Word Splash to form a sentence. You will need to underline the words taken from the word splash in the sentence.  
• Make a total of 7 to 10 sentences on the concept of Frictional Force.

This is due on Monday, 18 Jan. Science Monitors will collect first thing in the morning. 

To help you along, here's one example:

Friction can be a problem as it produce heat when two surfaces are rubbed against each other.

Online Discussion: Types of wheels in Formula One Race Car

http://singaporegp.sg/insidef1/did_you_know.php

• Read this website on the specifications of wheels/tyres in Formula One race cars
• Friction is both an advantage and disadvantage in the movement of cars.
• Post your comments here on how you think different types of wheels affect the movement of the race cars.

More information on 2016 F1 Race 

http://singaporegp.sg/?gclid=CM_5z9rpm5QCFRxxbgodtS8otQ

Video: Frictional Force on Wheels
https://youtu.be/RHYHtfyamOw?t=1

Experiment: Activity 1 - Mass vs Friction

Complete pg 3 on your own by tomorrow. I'll go through the answers in class tomorrow and further explain on your observations in today's experiment.

Important points to take note in today's experiment

• Aim: To infer the relationship between the amount of force needed to move stationary objects(s) and the mass of the object(s).
• We tried out Block A & B of the same size and mass in our experiment today. 
• We observed that when Block B was added to Block A, we need even more weights to move the both blocks. [This is an observation]
• What can you conclude from the experiment? The greater the mass of the objects, the greater the amount of force needed to move these objects. [This is a conclusion]
• We repeated the experiment 3 times and recorded 3 readings before taking the average. This is to ensure reliability and consistency in the results.

To visualize today's experiment....

Useful video to understand Frictional Force

Welcome to 6E Science!

Dear parents & pupils of 6E,

Welcome to Class 6E Science Blog!

I will be your child's Science Teacher this year. The pupils and I have come up with the following Class Promise for the year:

• Try your best.
• Keep learning.
• Respect each other.

If you have any questions or concerns, you can leave a message at the school office at 64824650. Alternatively, you can email me at jocelyn.kohpeili@gmail.com. I have set up a 6E Science Blog at the following address: http://2016-edp6e-science.blogspot.sg. I will post up notices, homework and pictures of the students from time to time. Let us work together to make this year a fruitful one! Wishing you a blessed New Year in 2016!

Best Regards,

Mrs Jocelyn Tan-Koh