Lesson 2 - Exploring Changes
Hello 3H!
Welcome to the second lesson in your Science unit.
Before we start this new lesson, I want to see how much you know about how solids, liquids and gases can be changed. Watch the below slide show. Record the answers to the questions in your book. Can you get them all correct?
Welcome to the second lesson in your Science unit.
Before we start this new lesson, I want to see how much you know about how solids, liquids and gases can be changed. Watch the below slide show. Record the answers to the questions in your book. Can you get them all correct?
How did you go?
Today we are going to look at how water can change from a liquid into a solid and vice versa. If you look at the worktables at the back of the room, I have left some ice cubes in a tray for you. There should be four ice cubes for each of you. We are going to study the effect that different areas of the classroom have. But before we do that, we need to understand a few things first.
Firstly, we need to understand how ice is formed.
When water reaches below zero (0) degrees celsius, it freezes and becomes solid, forming ice.
Water can also be turned into a gas when heat is added! I have included a picture below for you which you should copy into your books now.
For our experiment today, you will need:
There are 4 different areas of the classroom we will be placing our ice cubes - in the sun, in the shade, in the fridge and in the freezer.
Before doing this, you are going to predict what will happen to your ice cube when you place it in these areas and leave it for a period of time. An example of this might be:
"I predict that when I leave my ice cube will completely melt and go back to its liquid state if I leave it in the sun, near the window"
Remember, we are scientists! We use our scientific words that we have learnt throughout the year, like predict and observe! We do not use the word "think".
You should have 4 predictions written in your books. Now, go show your results to Miss H. She is excited to see them!
It is now time to go and place your ice cubes, in their small dishes around the classroom. Set your stop watch for 5 minutes.
Below there is a sheet we will be using to record our observations. You will need to open this sheet and complete your observations in the spaces provided.
- 4 ice cubes
- 4 small dishes
- a stop watch
- your scientific prediction and observation skills
There are 4 different areas of the classroom we will be placing our ice cubes - in the sun, in the shade, in the fridge and in the freezer.
Before doing this, you are going to predict what will happen to your ice cube when you place it in these areas and leave it for a period of time. An example of this might be:
"I predict that when I leave my ice cube will completely melt and go back to its liquid state if I leave it in the sun, near the window"
Remember, we are scientists! We use our scientific words that we have learnt throughout the year, like predict and observe! We do not use the word "think".
You should have 4 predictions written in your books. Now, go show your results to Miss H. She is excited to see them!
It is now time to go and place your ice cubes, in their small dishes around the classroom. Set your stop watch for 5 minutes.
Below there is a sheet we will be using to record our observations. You will need to open this sheet and complete your observations in the spaces provided.
Time's up! Let's go have a look at our ice cubes!
What are some observations we might be looking for? What form have your ice cubes taken? Are they still solid or do they look different now? Record your observations on the spaces provided. Now repeat until you reach 10 minutes and 15 minutes. Record all of your observations.
Happy learning!
Miss H.
What are some observations we might be looking for? What form have your ice cubes taken? Are they still solid or do they look different now? Record your observations on the spaces provided. Now repeat until you reach 10 minutes and 15 minutes. Record all of your observations.
Happy learning!
Miss H.