Biology
What is the basic unit of life?
Cell
What is the largest animal on Earth?
Blue whale 🐋
What is 8 × 7?
56
Which planet is closest to the Sun?
Mercury
Which is heavier — 1 kg of iron or 1 kg of cotton?
They are the same
Which organ is responsible for breathing?
Lungs
Which animal can change the color of its skin?
Chameleon
What do you call a shape with three sides?
Triangle
What is the largest country in the world by area?
Russia
You have three apples, you eat one. How many are left?
Two
What is the green pigment in plants called?
Chlorophyll
Frogs belong to which class of animals?
Amphibians
Find the perimeter of a square with side 5 cm.
20cm
What is the longest river in the world?
The Nile
What can you see with your eyes closed?
Two
What process happens in leaves using sunlight?
Photosynthesis
How many hearts does an octopus have?
Three
What number comes after 999?
1000
Which continent lies entirely in the Southern Hemisphere?
Australia
Which shape has only one side and one edge?
Möbius strip
Which organ produces insulin in the human body?
Pancreas
What is the winter sleep of animals called?
Hibernation
What is a number that can be divided only by 1 and itself?
Prime number
What is the deepest ocean on Earth?
The Pacific ocean
What always goes but never comes back?
Time