ELEMENTS
OPTIC FIBER
SOUND
SCIENCE & FICTION
IT'S ALL RELATIVE
100
Who organised the periodic table?
Dmitri Mendeleev
100
Describe what the mirror effect is.
The incident ray is reflected when it reaches the mirror.
100
Describe what a sound is.
A vibration of air/ a wave with a specific frequency
100
What film takes place in "a galaxy far far away"?
Star Wars
100
What's the specificity of the ice music festival?
All the instruments are made of ice.
200
How many groups are there in the periodic table?
18
200
Explain why you see a whiteboard white.
It absorbs all the light and diffuses/ scatters all the coloured light.
200
What unit is used to measure sounds?
Hertz (Hz)
200
Explain why we shouldn't be hearing the thrusters during the space battles.
Sound needs air to propagate but there's no sound in space (except in films)
200
Define what refraction is.
When the light hits a surface, its direction changes.
300
Which categories of elements are on the left of the periodic table?
The Alcalins and Hydrogen
300
Translate "réflexion totale" into English and spell "réflexion" in English.
total internal reflection
300
What's the property of pure sound?
It's cold.
300
Name 2 characteristics of vibranium.
It absorbs the force of blows/ It reemits kinetic energy to knock out villains/ It's a metal (hard, shiny and conducts electricity)/ It's radioactive (it glows a mysterious purple in the dark)
300
What does f=444Hz correspond to in French?
the key LA
400
What's the typical colour of fluorine gas?
Yellownish or brown
400
What are the 3 elements that structure optical fibers?
core, cladding and (buffer) coating.
400
What b.p.?
boiling point
400
What's the French equivalent of a "pitch"?
Hauteur de son
400
How do you make a plastic bottle in a refinery?
You bond oil and gas molecules.
500
What's the category of elements that is intermediate between metals and non-metals?
Metalloids
500
What's a fiber optic cable? (2 elements)
It's a wire.
It contains transparent material.
It carries light.
500
Give the characteristics of a musical sound wave.
The wave is periodic but not sinusoidal
500
What can't people hear in space according to the poster of the film Alien?
They can't hear you scream
500
Which element has 35 as its atomic number?
Bromine