SCI PRACTICE

Which organ pumps blood through our body?

• Lungs

• Brain

• Heart

• Kidney

What gas do humans exhale?

• Oxygen

• Carbon dioxide

• Carbon monoxide

• Helium

What do bees collect from flowers?

• Honey

• Pollen

• Nectar

• Leaves

What do we call the force that pulls objects toward the center of the Earth?

• Friction

• Magnetism

• Gravity

• Speed

Which vitamin is essential to make our nerves and muscles healthy?

• Vitamin A

• Vitamin B

• Vitamin C

• Vitamin D

What is the name of the largest human organ?

• Liver

• Skin

• Brain

• Heart

Which of the following is the largest animal on Earth?

• Shark Fish

• Black Whale

• Blue Whale

• Whale Shark

Which of the following is Planet Venus known for?

• Having icy rings

• Being the hottest planet

• Having many moons

• Being the closest planet to the Sun

Answer explanation

Venus is the hottest planet in the solar system due to its thick atmosphere of carbon dioxide, which traps heat.

Although Jupiter has many moons and Saturn is known for its rings, Planet Venus stands out for its extreme temperatures.

Which of these is the strongest muscle in the human body?

• Thigh

• Bicep

• Jaw

• Heart

Answer explanation

The masseter, or jaw muscle, is the strongest muscle based on its ability to exert force. It can generate more pressure than any other muscle in the body.

You leave a wet towel out on a sunny day, and after a while, it becomes dry. What process is happening to the water on the towel?

• Melting

• Sublimation

• Evaporation

• Condensation

Answer explanation

Evaporation happens when the liquid water on the towel changes into a gas due to the heat from the sun.