Exploring Physics and Engineering

What effect causes water to drain in opposite directions in different hemispheres?

• Centrifugal force

• Magnetic field variation

• Gravitational pull

• Coriolis effect

What geometric shape is formed by tracing a string connected between two pins in cardboard?

• Triangle

• Square

• Ellipse

• Circle

What principle allows a whisper to be heard across an elliptical room?

• Amplification

• Focus points

• Resonance

• Echo

According to Newton's first law, what happens to objects in motion when no external force is applied?

• They speed up

• They change direction

• They stay in motion

• They stop immediately

Why do balloons move backwards in a car when you slam on the brakes?

• Because of the car's speed

• Due to gravity

• Due to air pressure changes

• Because of the helium's lighter density compared to air

Why doesn't a fan attached to a sailboat propel it forward?

• Due to the weight of the boat

• Because the air is too thin

• Due to the equal and opposite reaction

• Because of water resistance

How much extra rope is needed to raise a rope tied around the Earth by one foot off the ground?

• 24 feet

• 6.28 feet

• 100 feet

• 12.56 feet

What does the Hoverglide backpack aim to reduce?

• Weight of the backpack

• Impact forces

• Cost of backpacking

• Back pain

What is the primary reason the tourist equator water draining demonstration is misleading?

• Because of the Coriolis effect

• Due to the demonstrator's subtle actions

• Due to magnetic fields at the equator

• Because water always drains clockwise

Why do toilets not swirl in opposite directions in different hemispheres?

• Because of the sink design

• Due to the Coriolis effect being too weak

• Because of the water temperature

• Due to plumbing standards