Earth, Atmosphere & Resources
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Today's Atmosphere and Resources
Build the core idea from scratch with gentle steps and lots of hints.
Combined Science · Beginner
5
questions · ~4 min · 3 hints each (−5 pts)
Confidence tracking, 3-tier hints and instant feedback.
What you'll learn
Each question helps you build key knowledge and skills.
- 1Today's atmosphere is about 80% nitrogen and 20% oxygen, with small amounts of carbon dioxide and argon.
- 2Earth's early atmosphere had much more carbon dioxide and almost no oxygen.
- 3A greenhouse gas traps heat from the Sun and keeps the Earth warm.
- 4Renewable resources can be replaced naturally, but finite resources will run out.
Question mix
A mix of question types to build your skills.
- Short answer×2
- Multiple choice×2
- True / False×1
Different question types help you think in different ways.
How it works
A simple 3-step process
- 1
Rate your confidence
Tell us how sure you feel before answering. It helps us understand your starting point.
- 2
Use hints if stuck
Get up to 3 helpful hints per question. Each hint costs 5 Treasure Points.
- 3
See what went wrong
Get instant feedback with clear explanations, so you can learn and improve.
Ready when you are
This takes about 4 minutes.