Science 3 Quiz Bee SY 2024-2025

Why do plants need sunlight?

• To stay warm
• To make food
• To attract insects
• To absorb water

Answer explanation

Plants use sunlight for photosynthesis to make food.

A glass of water is left outside on a hot day. What happens?

• It turns into ice
• It evaporates
• It disappears instantly
• It changes color

Answer explanation

Heat causes water to turn into vapor.

What is the function of roots in plants?

• To absorb water and nutrients
• To make flowers
• To attract bees
• To support the leaves

Answer explanation

Roots take in water and nutrients from soil.

A child rubs a balloon on their hair and sticks it to the wall. Why?

• The balloon became sticky
• The wall pulls the balloon
• Static electricity was created
• The hair stuck to the balloon

Answer explanation

Rubbing transfers electrons, making the balloon stick.

A seed is planted in dry soil and not watered. What happens?

• It will grow slowly
• It will grow faster
• It will not grow
• It will change color

Answer explanation

Seeds need water to germinate.

A child pushes a toy car, and it moves. What force is applied?

• Gravity
• Friction
• Magnetism
• Push/Pull Force

Answer explanation

A push force moves objects forward.

A rainforest loses its top predators. What happens next?

• Prey animals overpopulate
• Plants grow more
• The climate cools
• It rains more

Answer explanation

Without predators, prey populations grow too much.

A scientist froze hot and cold water at the same time. The hot water froze first! Why?

• Hot water cools faster
• Hot water evaporates faster
• Cold water resists freezing
• The freezer absorbs heat from cold water

Answer explanation

The Mpemba Effect: Hot water evaporates quickly and loses heat faster.

A robot explores deep caves on Mars. What does it need?

• Solar panels
• Wheels for smooth surfaces
• A drill and obstacle detection
• A parachute

Answer explanation

A cave robot needs drills and sensors, not wheels.

A spaceship is traveling for 1,000 years. What is essential for survival?

• Infinite fuel
• Recycling oxygen, water, and food
• A machine that produces sunlight
• A large food supply

Answer explanation

Recycling is key for long-term space survival.