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Year 7 Science

Week beginning 23rd March

 Task 1 – Physical and chemical changes.

Watch the YouTube clip about physical and chemical changes. 

Complete the worksheet on ‘Chemical and physical changes’, there is a differentiated version please choose the appropriate sheet for you. (see worksheets section below) 

Task 2 – Growing crystals

Make some sugar crystals using the instructions below. Keep a diary of your crystal observations. Include as much detail as you can about how your crystals grow. Also include sketches and maybe even photographs of them each day if you can.

Making Sugar Crystals: You Will Need:

· 3 cups of Sugar

· 1 cup of Boiling Water (Ask an adult for help here)

· Food Colouring (Optional)

· Some string or cotton thread

· A paperclip

· A tall, clean jug

· A pencil



· Mix the sugar and the water together in the jug. Ask an adult to help you with the boiling water.

· If you can, add more sugar as you mix until the sugar no longer dissolves and sits at the bottom of the jug.

· You can add food colouring now if you wish.

· Leave the water and sugar to cool down.

· While the water is cooling, tie your length of string or cotton around your pencil. The string should be long enough that when the pencil is balanced across the top of the jug, it doesn’t quite reach the bottom.

· Attach the paperclip to the bottom of the string to give it some weight.

· Dip the string into the jug and remove it. Leave it to one side to dry and form mini crystals.

· Once the sugar mix is cool and the string is dry hang the string back in the sugar mix.

Leave the jug in a quiet place where it won’t be disturbed. Check on it everyday for about a week to see how your crystals are doing.

 Chemical and physical changes

Chemical and physical changes differentiated

Week beginning 13th April

 Use the information in the YouTube and BBC Bitesize links below, along with what you have covered in previous lessons to complete the worksheet on Chemical Reactions

What are solids, liquids and gases?

Solids, liquids and gases information

Chemical reactions (worksheet)


Week beginning 20th April


New topic looking at the skeleton, muscles and moving. 

Task 1 

Watch the YouTube clip on Your Super Skeleton. Then using the worksheet below make a life size model of a skeleton. You can either stick it to a large piece of paper (eg wallpaper paper) or connect the bones together using split pins. 

Life size skeleton worksheet 


Week beginning 27th April

Joints information

Use the information in the links above to produce an information leaflet or poster about joints. Make sure you include information about the following in your poster. 

  • Describe what a joint is and why we need them in our bodies. 
  • Describe what a ball and socket joint is and how it works, use a diagram to help you.
  • Give examples of where in the body you would find a ball and socket joint. 
  • Describe what a hinge joint is and how it works, use a diagram to help you. 
  • Give examples of where in the body you would find a hinge joint. 


Week beginning 4th May


This week you are going to make a model of an elbow joint. 

You will need:

  • 2 toilet rolls or 2 pieces of cardboard or 2 lolly-pop sticks - these will be your bones
  • String - this will be your ligaments
  • 2 rubber bands - these will be your tendons
  • Sellotape

Before you start you need to:

  • Find out the role of ligaments. What do they do/what do they connect?
  • Find out the role of tendons. What do they do/what do they connect?
  • Find out what type of joint is an elbow joint?

Use the links from last week to help you find out the information.

To make your elbow joint use the information in the picture below. 


Week beginning 11th May


This week you are looking at how muscles work. Use the information in the links below to help you complete the worksheet. There is also a wordsearch for you to complete. 

Muscles and movement wordsearch

Muscles information

Muscles worksheet


Week beginning 18th May


Produce a poster about 'What is bone made of?'

Include information about:

  • The structure of a bone, including a diagram.
  • What is the role of bone marrow and where do you find it?
  • What is the role of cartilage and where do you find it?
  • How you can strengthen your bones.  


Bone structure information

Cartilage information


Week beginning 1st June

See Spacex launch link on main Science page

Produce an information booklet on "How animals with a skeleton move". Include a picture showing how the animal moves and describe how the skeleton, joints and muscles help it to move. Include an example animal for:

  • An animal that can fly
  • An animal that walks/runs using legs
  • An animal that swims