General Knowledge Science Quiz for Grade 5

Why is the sky blue?

• Because the ocean reflects its color

• Because of the way sunlight scatters in the atmosphere

• Because of pollution

• Because of clouds

Why do astronauts float in space?

• There is no gravity in space

• The spaceship pushes them up

• They are wearing special suits

• They are in a state of free fall

Why do your fingers wrinkle in water?

• Your skin absorbs water

• Your body is trying to grip better

• Your blood vessels shrink

• It’s a sign of dehydration

Why do we see lightning before we hear thunder?

• Thunder is quieter

• Light travels faster than sound

• Lightning is closer

• Sound gets lost in the clouds

Why do we put food in the fridge?

• To make it taste better

• To keep it dry

• To slow down bacteria growth

• To make it heavier

Which of these animals is nocturnal (active at night)?

• Squirrel

• Owl

• Cow

• Butterfly

What causes seasons on Earth?

• The Moon’s gravity

• Earth’s distance from the Sun

• Earth’s tilt on its axis

• The Sun spinning faster

Which of these is NOT a renewable energy source?

• Wind

• Solar

• Coal

• Hydropower

Which gas do humans need to breathe to stay alive?

• Carbon dioxide

• Oxygen

• Nitrogen

• Hydrogen

Which planet is known for its rings?

• Mars

• Jupiter

• Saturn

• Neptune