Conduction, Convection and Radiation

Heat energy can move through substances that are directly touching by conduction. Metals are especially good at conducting heat,  non-metals are usually not good at conducting heat.

Heat energy can move through liquids and gases by convection. The particles in these fluids can move from place to place. Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy.

All objects give out and take in thermal radiation.  Radiation can transfer heat through empty space.  The hotter an object is, the more thermal radiation it emits.

The following songs provide a fun way to review conduction, convection and radiation.

What examples of conduction, convection or radiation did you notice in the videos?

Can you think of your own examples of conduction, convection or radiation?

Energy Transfer and Storage

Energy is power that comes from physical or chemical resources. It’s a part of our everyday lives and we use it many, many times throughout the day. Energy makes things happen, like switching on a light, using a heater or turning on your computer. Energy can never be created or destroyed, just transferred into different forms.

Watch the interactive video below and take the quiz at the end. Then write about four things you have learnt from the video in a ‘quality comment’.  You can write this comment in your home learning book or post it here on the blog.

Watch the ‘Energy Transfer and Storage’ video 

What is the difference between heat and temperature?

What is an insulator? Can you think of any examples of objects that are good insulators? 

What is ‘movement’ energy called? 

What is radiation? 

 

 

How cyber smart are you?

The internet is a wonderful tool that lets us watch videos, play all kinds of games and find out interesting information. At Serpell we have been very fortunate  this year as all students in year 3 attended a ‘Cyber Safety’ session. Here we learnt about the things we should be careful about while online, what details we shouldn’t give out, what to do if we are unsure about something we have seen online and what not to do. We got some handy tips on what to do if we were experiencing cyber bullying.

Click on the link and take the quiz to see how cyber safe you are: Cyber smart quiz 

What do you remember from the session?

How cyber smart are you?

What are some important tips you need to remember to be cyber smart?

Why do you think it’s important to be cyber smart?

Once you have completed the quiz write down 4 tips about how to stay cyber smart in a ‘quality comment’ to a friend. You can write this comment in your home learning book or post it  here on the blog.

Energy Explorers

As part of our ‘Heating Up’ unit we have been exploring the difference between hot and cold and exploring items that are sources of heat.

If you look around your home you’ll find many items that are a source of heat.  Some items produce their own heat, while others items are heated by something else.

Last week you found five items around your home that were a source of heat.  For each item, identify whether its heat is produced through electricitychemical reaction (burning) or friction. Write about each of your five items in a ‘quality comment’.  You can write this comment in your home learning book or post it here on the blog.

Electricity: items you plug in, such as a hairdryer.
Chemical Reaction (burning): anything that burns, such as fire.
Friction: two objects rubbing together, such as rubbing your hands together.

What heat items did you find in your home?  Do you think they created heat using electricity, a burning or friction?

The temperature is rising and the spring flowers are in bloom; it is the perfect time of year to explore the role of heat and temperature in our every day lives.  This term’s unit, Heating up, will provide us with the opportunity to once again become scientists. As Year 3 scientists we will pose questions, seek out answers, conduct experiments and draw conclusions about scientific phenomena we experience in our day-to-day lives.

During our inquiry you can check in here to keep up to date with our discoveries and join in by connecting with the online resources we’ll be using.  As always, feel free to join in our reflections by posting quality comments.  For now, here are a few questions to ignite a spark of scientific inquiry:

What hot or cold items might you find around your home?

Can you remember a time when you were extremely hot? 

Can you remember a time you were extremely cold? 

Aboriginal Dreaming

‘When we talk about the Dreamtime, we think about the beginning. It was that sacred time when the land, water, trees, animals, sacred sites and people came to be. Our ancestors have passed on the Dreamtime to us through our culture – law, language, song and dance. The Dreamtime is that special thing in the hearts of all Aboriginal people.’ (Eileen Bray, Warmun Cmmunity, Turkey Creek)

Select a Dreaming story to view and respond to.

Write a response to your favourite clip

Write the title of your favourite Dreamtime Story.
Describe the main events in the story.
What is the main message of the story?
Why was this your favourite clip?

Commemorations and Celebrations

Joanne Villis was inspired to create a unit of work after travelling to the Northern Territory and spending time on a family station, Umbearra Station, located 45km from Kulgera in the Northern Territory.

Her blog has motivated us to explore Indigenous commemorations and celebrations.

Visit Joanna’s blog and read about ‘National Sorry Day’ and ‘NAIDOC Week’.

http://year3history.edublogs.org/indigenous-commemorations-celebrations/

Sourced from ‘Creative Commons’.

 

Source from ‘Creative Commons’

What is the difference between a commemoration and a celebration?

Do you know of any Indigenous commemorations and celebrations?

What is the song’s message?

Why is NAIDOC week important to Aboriginal Australians?

Australia’s discovery and settlement timeline

A timeline is a type of chart that shows events in the order they happen. Some timelines show basic information, like dates or times, while others describe each event on the timeline or have pictures to show what happened at each event.

Part of our inquiry will be spent broadly examining the timeline of Australia’s indigenous history, European discovery and subsequent settlement.

There have been a number of significant historical events that have led to the settlement of Australia and we can look at these in three key stages:

Images from: http://www.australianhistory.org/

Click on the following links to find out more about any of the events within the three key stages:

50,000 to 225 years ago (before European settlement)

225 to 113 years ago (discovery and colonisation)

113 years ago to present day

 What is something interesting you found out about Australia in the years prior to European discovery and settlement?

What things did early European settlers bring with them to make their community here in Australia similar to their lives back home?

Do you know anyone who came to Australia for a better quality of life?

Who lived here first and how do we know?

This term’s inquiry unit of study is Community and Remembrance.   We will explore many questions related to the histories and identities that make up all of the peoples of Australia, with a particular interest in our closer community.

 So who lived here first and how do we know?  

Most people can tell you that the Aboriginal people were here first.   Others will tell you that it was the Aboriginal and Torres Strait Island people.  Some people refer to these people as the ‘Traditional Owners of the Land’ or Indigenous Australians.  Indigenous is a word used to describe something that is ‘original’ or ‘naturally occuring’ in a specific place.

What do you know about who was here first?

Did you know…

  • Historians believe that people have been living in Australia for more than 50 000 years. We call these people and their decendents Indigenous Australians because they were the first people to live here.
  • Indigenous culture in Australia is very diverse.  There are about 600 culturally distinct groups who each speak a different language.

 Reference: australia.gov.au: Australian Indigenous cultural heritage; ACME, et al.; 2008

If we want to understand the first Australians we have a lot to learn.

You might like to start by exploring the Torres Strait Islander flag and the Aboriginal flag.   Also, have a look at an Indigenous Language Map.

 

What is the name of the Indigenous People who lived in our community?

What can you tell us about Indigenous Australians?

Do you know about any other Indigenous cultures in other parts of the world?

How do you think historians learn about Australia’s past?