Stem Quiz 2

Roses double daily (skip Sundays), lilies triple daily, tulips grow by 5 per day. Start with 1 each on Friday. When do lilies outnumber roses + tulips?

• Day 1 (Friday)

• Day 2 (Saturday)

• Day 3 (Sunday)

• Day 4 (Monday)

If you were creating a new eco-friendly transportation device for your city, which combination would be most efficient?

• Solar panels and batteries

• Wind power and elastic energy

• Kinetic energy recovery and hydrogen fuel

• Magnetic levitation and compressed air

You notice that a local pond has fewer frogs than last year. Which combination of factors would you investigate first?

• Temperature changes and food availability

• Water pH levels and new predators

• Human activity and rainfall amounts

• Disease presence and water pollution

If humans developed the ability to photosynthesize like plants, which physical adaptation would be MOST necessary?

• Transparent skin

• Larger surface area of the body

• New digestive organs

• Modified lung structure

You're designing a Robot that can survive in both very hot and very cold environments. Which combination of features would work best?

• Thick fur and sweating ability

• Color-changing skin and adjustable metabolism

• Hibernation capability and water storage

• Multiple layers of scales and internal temperature control

Which organelle in a plant cell is responsible for capturing sunlight and converting it into energy?

• Mitochondria

• Nucleus

• Chloroplast

• Ribosome

A bridge is designed with triangular supports because triangles are the strongest shape. What property of triangles makes them so strong in construction?

• They have equal sides

• They evenly distribute weight

• They can change shape easily

• They are symmetrical

A square has a perimeter of 48 cm. What is the area of the square?

• 2304 cm²

• 256 cm²

• 144 cm²

• 64 cm²

If you push an object with twice the force, what happens to its acceleration (assuming mass stays the same)?

• It stays the same

• It halves

• It becomes zero

• It doubles

If you're designing a roller coaster, where should you place the loop for maximum safety and excitement?

• At the very beginning

• After the first big drop

• Near the end

• In the middle of two hills