In this video from 'Physics Girl', the host introduces Simone Giertz, known for her comedic robotics. Simone shares her background in physics and humorously tackles a warm-up question about bicycle screws. The video then presents a physics riddle involving air resistance on two spheres of different materials. Viewers are encouraged to return for the answer and engage with the content on social media.

Who is the special guest featured in the video?

• Neil deGrasse Tyson

• Elon Musk

• Bill Nye

• Simone Giertz

What is Simone Giertz known for?

• Creating comedic robots

• Hosting a science podcast

• Building efficient robots

• Writing physics textbooks

Why is there a left-handed screw on a bicycle pedal?

• To make the bicycle lighter

• To improve the bicycle's speed

• To enhance the bicycle's aesthetics

• To prevent the pedal from unscrewing while pedaling

Which side of the bicycle has the left-handed screw?

• Right side

• Left side

• Front side

• Back side

What is the main factor affecting air resistance at terminal velocity for the two spheres?

• Their weight

• Their surface coating

• Their color

• Their size