Science quiz
How the natural world works. 10 quick questions drawn from Mochi's science topics. See how many you get, then keep what you learn for good.
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Which gas do plants release during photosynthesis?
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What type of force is gravity?
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What does DNA stand for?
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Which layer of Earth do tectonic plates sit on top of?
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Which process turns liquid water into water vapor?
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What is the smallest unit of an element that keeps its chemical properties?
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What is the main idea of natural selection?
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Which state of matter has both a definite shape and a definite volume?
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How many planets are in our Solar System?
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Which law states that F = ma?
You scored 0/10
Here's the catch: a score today fades by next week unless you revisit it. Mochi schedules each idea to come back right before you'd forget, and turns keeping up into growing a pet.
Sample study cards
A taste of the science cards inside Mochi. In the app, these resurface on a spaced schedule so they actually stick.
Photosynthesis What is photosynthesis?
Photosynthesis is the process by which green plants use sunlight, water, and carbon dioxide to make their own food and release oxygen.
Gravity What is gravity?
Gravity is a force that pulls objects with mass toward each other. On Earth, it pulls everything downward toward the center of the planet.
DNA What is DNA?
DNA (deoxyribonucleic acid) is a molecule that carries the genetic instructions for the development, functioning, growth, and reproduction of all known living organisms.
Plate Tectonics What is the Earth's lithosphere?
The lithosphere is the rigid outer layer of Earth, made up of the crust and the uppermost part of the mantle. It is broken into large pieces called tectonic plates.
The Water Cycle What is the water cycle?
The water cycle is the continuous movement of water through Earth's atmosphere, land, and oceans. It has no beginning or end.
Atoms and Elements What is matter?
Matter is anything that has mass and takes up space. All physical objects around us are made of matter.
Evolution by Natural Selection What is evolution?
Evolution is the change in inherited traits of a population over successive generations.
States of Matter What is matter?
Matter is anything that has mass and takes up space. Everything around us, from air to rocks, is made of matter.
The Solar System What is the Solar System?
The Solar System is the Sun and everything bound to it by gravity, including eight planets, moons, asteroids, and comets.
Newton's Laws of Motion What is inertia?
Inertia is the tendency of an object to resist any change in its state of motion or rest.
All science topics
- Photosynthesis
- Gravity
- DNA
- Plate Tectonics
- The Water Cycle
- Atoms and Elements
- Evolution by Natural Selection
- States of Matter
- The Solar System
- Newton's Laws of Motion
- Acids and Bases
- Cells and Organelles
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