Space & physics flashcards

The cards

1. QuestionWhich planet is closest to the Sun?Tap to flipAnswerMercury.
2. QuestionWhich is the largest planet in our solar system?Tap to flipAnswerJupiter.
3. QuestionHow many planets are in our solar system?Tap to flipAnswerEight.
4. QuestionWhat does the Moon orbit?Tap to flipAnswerThe Earth.
5. QuestionAbout how fast does light travel?Tap to flipAnswerAbout 300,000 kilometers (186,000 miles) per second.
6. QuestionWhat is a light-year?Tap to flipAnswerThe distance light travels in one year.
7. QuestionWhat is an orbit?Tap to flipAnswerThe path an object takes around a planet or star.
8. QuestionWhat is the name of our galaxy?Tap to flipAnswerThe Milky Way.
9. QuestionWhy do we have day and night?Tap to flipAnswerThe Earth spins around its axis, once about every 24 hours.
10. QuestionAt what temperature does water boil at sea level?Tap to flipAnswer100 °C (212 °F).

How it works

1. Flip each card and say the answer first.
2. Rate it: Still learning or Got it!
3. Flash Feed brings it back at just the right time.