Riddle
Follow you all the time and copy your every move, but you can't touch me or catch me. What am I?
Your shadow
What is the capital of Brazil?
BrasÃlia
Identify the element Sn
Tin
What can't talk but will reply when spoken to?
An echo
Which island nation is known for its chocolate and waffles?
Belgium
What does the acronym "IAEA" stand for, which oversees nuclear safety?
International Atomic Energy Agency
I'm tall when I'm young, and I'm short when I'm old. What am I?
A candle
What is the largest city in Africa?
Lagos
Which theorem provides a relation between the energy of a system and its entropy?
Helmholtz
You see a boat filled with people, yet there isn't a single person on board. how is that possible?
All the people on boat were married.
What is the name of the largest island in the Caribbean?
Cuba
Which device, named after a French engineer, measures pressure using a curved tube that straightens under pressure?
Bourdon Gauge