The egg doesn’t break because the salt water spreads the impact across the whole egg. Try dropping the egg in the bottle...

Enrichment Activity 5-11 11-14

A vortex of air is pushed out of the bottle by the balloon, ruffling everything it passes. How far will the vortex travel?

Enrichment Activity 5-11 11-14

Once you've had a bit of practice, the cups will soon be looping in the air. This is because elastic makes the cups spin...

Enrichment Activity 5-11 11-14

The bag doesn't burst because the plastic stretches rather than tears as the pencils are pushed through it. If you take a...

Enrichment Activity 5-11 11-14

The toothpicks move. Just like synchronised swimmers! The water makes the wood expand, the broken ends press against each...

Enrichment Activity 5-11 11-14

The egg starts spinning! The yolk and the white aren't attached to the shell so they carry on moving when you stop the raw egg...

Enrichment Activity 5-11 11-14

Believe it or not, you can’t break it by squeezing it! An egg’s arched shape makes its structure as strong as possible, so...

Enrichment Activity 5-11 11-14

The rod just won’t tear through the paper! As you push the rod, the grains of sand are pushed away from it in all directions...

Enrichment Activity 5-11 11-14

The straw should go in, but if you try to twist it in slowly, it doesn’t work. The rim of the straw has a very small surface...

Enrichment Activity 5-11 11-14

When you swirl the water, it forms a vortex like a tornado and flows much faster into the lower bottle. Air from the lower...

Enrichment Activity 5-11 11-14

All the beads should “flow” out of the container without help. When they’re moving fast they should even jump higher than the...

Enrichment Activity 5-11 11-14

When you push the object, it will slide till it reaches the edge of the table, then stop. If you're using a walking toy, it...

Enrichment Activity 5-11 11-14