According to Khan Academy, "Earth badges are rare. They require a significant amount of learning". They are rare.
Earth Badges on Khan[]
Two of the easier or at least more common badges in this category are Sub-light Speed for getting 42 questions right quickly and Work Horse for mastering 50 skills.
The three hardest to get Earth badges that you hear people say they want are 10,000 Year Clock for reaching a 100 day streak, Sensei for getting 50 answers with 3 or more votes, and Incredible inspiration for getting 50 valid spin-offs (code must be changed to count).
Badges List (All descriptions directly from Khan Academy's webpage)
|
Speed Badges: | ||
|---|---|---|
| Sub-light Speed
[1500 Energy Points(e.p.)] |
299,792,458 Meters per Second
[5000 e.p] |
Double Power Hour |
| Quickly & correctly answer 42 skill problems in a row (time limit depends on skill difficulty) | Quickly & correctly answer 75 skill problems in a row (time limit depends on skill difficulty) | Correctly answer 180 problems and watch 30 minutes of video in 2 hours |
|
Inspiration Badges: | |
|---|---|
| Great Inspiration
[2500 e.p.] |
Incredible Inspiration [ 5000 e.p] |
| Other users created 25 programs based on one of yours | Other users created 50 programs based on one of yours |
|
Mastery Badges: |
Learning Badges | ||
|---|---|---|---|
| Work Horse
[14000 e.p] |
Ridiculous Listener | 10,000 Year Clock | |
| Achieve mastery in 50 unique skills | Watch 4 hours of video in a single topic | Watch part of any video or work on any skill each day for 100 consecutive days | |
|
Patron Badges (donations) | ||
|---|---|---|
| 2015 Patron | 2016 Patron | 2017 Patron |
| Support Khan Academy with a donation in 2015 | Support Khan Academy with a donation in 2016 | Support Khan Academy with a donation in 2017 |
|
Discussion Badges | ||
|---|---|---|
| Guru | Incredible Teacher | Sensei |
| Post 10 answers that earn 3+ votes | Post 25 answers that earn 3+ votes | Post 50 answers that earn 3+ votes |
| Rave Reviewer | Great Answer | Incredible Answer |
| Evaluate 150 projects | Post an answer that earns 25+ votes | Post an answer that earns 50+ votes |
| Incredible Question | Great Question | Investigator |
| Ask a question that earns 50+ votes | Ask a question that earns 25+ votes | Ask 10 questions that earn 3+ votes |
| Energy Points Badges |
|---|
| Five Times Ten to the Fifth |
| Earn 500,000 energy points |
| Helen Keller |
| "Earn 750,000 energy points.
Helen Keller (1880-1968) was born [sic] blind and deaf. With the help of her teacher Anne Sullivan, she went on to graduate from college and became an influential writer, lecturer, and activist. Be like Keller and keep on learning!" ** |
**Fact error is part of current badge description
| Membership Badges | |
|---|---|
| Sequoia | Bristlecone |
| Remain a member of Khan Academy for 3 years | Remain a member of Khan Academy for 4 years |