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Everyday Science

Everyday Science practice

Why the sky is blue
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Why does a clear daytime sky look blue?
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Why things happen — the mechanisms behind daily life
Why things happen — the science behind everyday life, one satisfying mechanism at a time. Why the sky is blue but sunsets are red, why grass is green, why ice floats (and why that saves lakes), why onions make you cry, why planes fly, why the microwave heats food but not the plate, why salt melts ice, why your ears pop, why mirrors seem to flip left-right, why the moon has phases. Every question tests the MECHANISM, and the wrong answers are the folk explanations people actually believe — so the reveal corrects a real misconception, names the principle, and leaves a rule that explains the next phenomenon too. Settled science only, explained honestly. The most shareable kind of knowledge: the world, demystified one why at a time.
• Meets you at your level — never too easy, never too hard.
• Adapts every question to how you’re doing.
• Tracks your level over time. Skill practice, not a test.

New here? Read the Everyday Science guide

A free 21-minute primer — the mental model, the mistakes beginners make, and what to practice first.

Curriculum

208 concepts across 25 chapters, from foundations through advanced practice — each one a concept the adaptive question bank can teach and test.

A. Heat, temperature, and cooking

8

B. Cold, freezing, and refrigeration

8

C. Water and its strange properties

8

D. Solutions, salt, and dissolving

7

E. Gases, air, and pressure

8

F. Acids, bases, and cleaning

8

G. Fire, rust, and batteries

8

H. Food chemistry and spoilage

8

I. Light and color

8

J. Mirrors, lenses, and seeing

7

K. Sky phenomena you can see

7

L. The electromagnetic spectrum at home

8

M. Sound and hearing

9

N. Electricity in the home

8

O. Magnets, motors, and induction

8

P. Radio, screens, and wireless

7

Q. Motion and forces in daily life

8

R. Simple machines and everyday mechanics

7

S. Fluids: floating, flowing, and flying

8

T. Materials around the house

8

U. Weather you can see out the window

8

V. Sun, moon, and seasons

7

W. Your body's everyday signals

20

X. Senses, perception, and illusions

8

Y. Microbes, mold, and hygiene

9
View the full curriculum →
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Everyday Science on exams

Everyday Science is one of the skills tested on this exam. Each prep page lays out what the real test covers and where this skill fits.
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