Subject
Science lessons
Discover interactive science lessons that make biology, chemistry, physics, and earth science accessible and engaging. Viafocus lessons use hands-on questions to reinforce key concepts and encourage scientific thinking.
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This week in science
Bromsen — Hur bromsar man en rymdsond i rymden, där det inte finns luft?
I rymden finns ingen luft och ingen väg att bromsa mot, så en rymdsond bromsar genom att vända sig om och skjuta ut motorgaserna framåt, åt det håll den åker. Så gjorde ESA:s rymdsond Hera i oktober 2026: den vände sig mot asteroiderna Didymos och Dimorphos och sköt med sina motorer i 93 minuter i sträck. Att stanna i rymden betyder att åka lika fort och åt samma håll som målet. Efter två bromsningar närmade sig Hera asteroiderna med bara 20 m/s, och kunde sedan glida närmare försiktigt. I lektionen trycker du på en broms som inte tar, vrider Hera, matchar farten och parkerar Hera vid Dimorphos genom att skjuta gas framåt eller bakåt. Del 2 av 2 i serien Knuffa en asteroid.
The Last Wolf
15 min
Two Ways to Be Fast
25 questions · 15 min
The Hungry Season — How does natural selection actually work?
21 questions · 13 min
Mud & Glow - Why does mixing paints make brown but mixing lights make white?
12 questions · 12 min
One More Tree
16 min
Uphill Water — How does a canal lock work, and how does a boat go up a hill?
13 questions · 10 min
The Wait — How does radar work, and how does it find a plane nobody can see?
29 questions · 16 min
Four Marks — How do you survive lost in the wild, and what kills you first?
30 questions · 16 min
Wake the Needle — What is a magnet, and how does a compass work?
26 questions · 15 min
Nobody Leads — How do thousands of birds fly in one flock without crashing?
12 min
Six Nights — Why do you have to finish your antibiotics even when you feel better?
11 questions · 9 min
Thin Ice — What is pressure?
11 questions · 7 min
Frequently asked
What science subjects can I learn on Viafocus?
Viafocus covers biology, chemistry, physics, earth science, and environmental science. Lessons range from introductory concepts to advanced topics.
Do the science lessons include experiments or simulations?
While Viafocus focuses on interactive question-based learning, many science lessons include visual diagrams, scenario-based questions, and real-world applications that reinforce experimental thinking.
Can teachers assign science lessons to their students?
Yes. Teachers can share lesson links directly or use the Viafocus classroom tools to assign lessons and track student progress.