Science - Physics, Chemistry & Biology

How many atoms are there in a usual adult?

• 1,000,000

• 700,000

• 8 × 10²⁷ (or eight octilion)

• 100,000,000

Which molecules have atoms of hydrogen?

• Graphite

• Water (H₂O)

• CO₂

• None of the above

Draw a molecule of water!

Explain the process of photosynthesis.

You're doing great! Now, what's the first radioactive element?

• H

• F

• Tc

• U

Who was the first scientist to theorize relativity?

• Bill Gates

• Muhamed The Conqueror

• Albert Einstein

• Nikola Tesla

What's the particle with the highest speed in the Universe?

• Electron

• Proton

• Photon

• None of the above

E = mc² describes objects with no velocity. What equation describes objects with velocity?

• E = pc²

• E² = mpc

• E² = (mc²)² + pc²

• E = p + mc³

How many water Ices exist? (not including hypothetical ices)

• Ten

• Only one

• Twenty

• Seventeen

People pollute the atmosphere in many different ways. What are the greenhouse gases?

• CO₂

• O₂

• H₂O₂

• NH₃