Inside the microwave there's a quickly-changing electric field. Water molecules are slightly charged at both ends, and want to...

Enrichment Activity 5-11 11-14

Light of certain wavelengths excites different types of cell in your eyes so you see these inputs as colours. As the CD spins...

Enrichment Activity 5-11 11-14

The attraction isn’t strong enough to lift large flakes, as each contains only a few magnetic particles. In crushed cereal the...

Enrichment Activity 5-11 11-14

Water overcomes gravity and rises up the arches as it is attracted to the cellulose in them and to the water already absorbed...

Enrichment Activity 5-11 11-14

The chair, person and cans together have something called angular momentum, which depends on how fast they're spinning and how...

Enrichment Activity 5-11 11-14

Though the paperclip should be heavy enough to sink, the surface tension of the water holds it up. When the washing-up liquid...

Enrichment Activity 5-11 11-14

When the broom hits the plate, the plate and toilet roll are knocked away and the egg falls into the glass, because it is not...

Enrichment Activity 5-11 11-14

When you blow directly into the bag, the only air flowing into the bag is from your lungs. When you blow from a short distance...

Enrichment Activity 5-11 11-14

Slinkies make sound because they vibrate when they stretch out. When they vibrate, they make the air around them vibrate. Both...

Enrichment Activity 5-11 11-14

The forks can hang off the side because all the forces are balanced

Enrichment Activity 5-11 11-14

One piece of foil will sink and the other will float. The piece of foil scrunched above water traps some of the air, which...

Enrichment Activity 5-11 11-14

As you put your finger in the water, the water tries to push up and float your finger. Because of this the finger pushes down...

Enrichment Activity 5-11 11-14