All 15 questions
Prefer reading to playing? Here is every question of this quiz — answers come with your score.
-
What is the second most abundant element in the Earth's crust?
- Carbon
- Aluminium
- Iron
- Silicon
-
Which subatomic particle carries a negative electric charge?
- Photon
- Proton
- Electron
- Neutron
-
What is the pH of a neutral solution at 25 degrees Celsius?
- 0
- 1
- 7
- 14
-
Which gas makes up roughly 21% of Earth's atmosphere?
- Oxygen
- Argon
- Carbon dioxide
- Nitrogen
-
The process by which a liquid turns into a gas is called?
- Sublimation
- Condensation
- Precipitation
- Evaporation
-
Which planet has the hottest surface in the Solar System?
- Venus
- Mars
- Mercury
- Jupiter
-
What is the chemical symbol for potassium?
- Po
- P
- Pt
- K
-
How many chromosomes are found in a typical human body cell?
- 23
- 44
- 46
- 48
-
Which scientist formulated the three laws of motion and universal gravitation?
- Nikola Tesla
- Galileo Galilei
- Albert Einstein
- Isaac Newton
-
What kind of energy is stored in a stretched rubber band?
- Thermal energy
- Kinetic energy
- Elastic potential energy
- Nuclear energy
-
Which part of the human inner ear is mainly responsible for balance?
- Semicircular canals
- Cochlea
- Eardrum
- Ossicles
-
Which blood type is known as the universal red-cell donor?
- A positive
- AB positive
- O negative
- B negative
-
Sound travels faster through water than through air.
- True
- False
-
A light-year is a unit of time, not distance.
- True
- False
-
Bats are completely blind.
- True
- False