1. Work with a partner and try to answer these questions:
A. If sound can’t travel through vacuums, why are they so loud?
B. Why does hair go grey?
C. How can fish hold their breath for so long underwater?
D. Why do you get wrinkly fingers when they’re in water for too long?
E. Can a ninja walk on water?
F. Coconuts have hair and produce milk. Why aren’t they classed as mammals?
G. Which came first: the chicken or the egg?
H. What happens if you put mints into a bottle of soda?

2. Watch this video and take notes.

A. Which question from Activity 1 does it answer?
B. What explanation does it provide?
C. Describe the different steps of the experiment.

3. Watch this second video and answer these questions.

A. Which question from Activity 1 does it answer?
B. Fill in these sentences with 3 words from the video:
a. Jamie decides to modify the liquid by adding some blue food colouring and ___________ which is used in pancakes, to make it look like ___________ so Adam can try the experiment under different conditions.
b. The experiment __________ and Adam _____ across the surface.
c. The explanation is that the new combination is a non-Newtonian __________ which can change its viscosity, and, while it may look like a _________, it will act like a solid on impact.
d. Lastly, if Adam steps and stands on it, he will _______ and it is quite clear that ______________ could not _____________.