🔭 Are You Intelligent Enough to Pass This Challenging Science Quiz? Let’s Find Out

What does the endocrine system do in the human body?

• It's made up of nerve cells that transmit electrical signals around the body.

• It's made up of glands that produce and secrete hormones.

Which chemical element has the symbol Bi?

• Boron

• Bismuth

• Beryllium

• Bohrium

What form of matter is thought to account for approximately 85% of the matter in the universe and about a quarter of its total mass–energy density?

• Dark matter

• Dark energy

• Cytoplasm

• Endoplasmic reticulum

This cat breed lives in Sri Lanka and India. What's it called?

• Jaguar

• Rusty-spotted cat

• Geoffroy's cat

• Tiger

What is this adorable Antarctic bird that has wings but cannot fly?

• Penguin

• Red-tailed hawk

• Kestrel

• Goshawk

When did flowers first appear on Earth?

• 500 million years ago

• Less than 100 million years ago

• 125-150 million years ago

• 175-200 million years ago

How many stars are in the Milky Way?

• 14 billion

• 100 to 400 billion

• 600 to 900 trillion

• 200 billion

What is one reason why people and animals yawn?

• To wake up tired muscles

• To increase your heart rate and blood pressure

• To increase the amount of oxygen in the blood

What is the boiling point of water at sea level?

• 80 °C

• 110 °C

• 50 °C

• 100 °C

This is the halfway point of the quiz! What part of a woman's anatomy is responsible for carrying a baby?

• Uterus

• Labia

• Fallopian tubes

• Clitoris

The Earth is what kind of planet?

• Dwarf planet

• Terrestrial

• Gas giant

• Asteroid

Which structure of the internal ear is responsible for balancing the body?

• Tympanum

• Stapes

• Cochlea

• Semicircular canals

The largest known impact crater on the Earth is the ___.

• Clearwater Lakes craters

• Caloris basin

• Vredefort ring

• Barringer crater

What is the black part of the eye called?

• Iris

• Pupil

• Cornea

• Retina

How many taste buds does the average human tongue have?

• 100,000

• 10,000

• 50,000

• 1,000,000

You're almost at the end! Which of these is a constellation?

• Corvus

• Caelum

• Cetus

• All of these