3.5

Question 1

Smart (self healing) paint

Answer 1

A coating that heals its own scratches when exposed to sunlight

Question 2

Self healing paint example

Answer 2

Ranging from electronics to aircrafts and cars

Question 3

Superconductors

Answer 3

Substances where resistance becomes almost zero at low temperatures,which reduces energy losses

Question 4

Superconductors examples

Answer 4

Powerful electromagnets used in MRI scanners

•magnetic levitation (maglev trains)

Question 5

Smart materials

Answer 5

Substances that are able to change their properties in response to their environment

Question 6

Smart materials examples

4

Answer 6

Dental braces
Spectacle frames
Shrink wrap packaging
Wound dressings

Question 7

Chronic materials (thermochromic,photochromic)

Answer 7

Materials that change their colour according to changes in temperature and light intensity

Question 8

Examples of chromic materials

6

Answer 8

Spectacle lenses
Windows
Rear-view mirrors
Light detectors
Optical switches
Light intensity meters