experiments

im going to add some experiments it is up to you if you try them or not feel free to add some of your own.
here goes


Draw a large open mouth on a small square of paper. On the other side of the paper draw a fish wiggly worm. Tape the square of paper securely to the end of a pencil. Hold the pencil between both hands and spin the pencil. Watch the picture closely. What happens?

(This can be messy so do it over the kitchen bench)

What you need:
Some balloons or a re-sealable plastic bag
¼ cup of vinegar
2 teaspoons of baking soda

What you do:
Pour the vinegar and baking soda through a funnel into the balloon or bag then clamp the balloon or bag shut. Let the vinegar react with the baking soda then open the mouth of the balloon or bag a little to let the gas escape. What does it sound like?

What you need:
A glass of water
Lemon juice
Castor sugar
Baking soda

What you do:
Squeeze some lemon juice into the glass of water and stir in a teaspoon of castor sugar. Taste the drink. Is it fizzy? Well, add a teaspoon of baking soda. What happens? What does it taste like? How does it taste different to bought fizzy drinks?
The baking soda and lemon juice react to make carbon dioxide in the water.

What you need:
A drinking straw
A blob of blu-tack or plasticine
A stopwatch or a second hand on a watch

What you do:
First find your pulse in your wrist. You should be able to find it easily on the inside of your arm just below your wrist on the same side of your arm as your thumb. Then attach a blob of blu-tack over the place where you felt the pulse. Carefully push a straw into the blu-tack then let your arm lie flat on the table. Watch the straw move back and fourth with your pulse.
Measure the pulse rate and how many times your heart beats by counting the number of times the straw rocks back and fourth in a minute.