Patterns in Motion and Friction

Can you predict the pattern of motion of the jump rope?

• circular around Izzy
• from side to side
• swinging back and forth
• just up and down

What do you predict about the pattern of motion for Izzy and Zoe's pendulums?

• the long one will swing fastest
• the long one will swing slowest
• they will swing the same
• they will not swing at all

Which of these pendulums do you predict will have the fastest motion?

• the longest one
• the shortest one
• the medium length one
• all will swing the same speed

What is resistance to motion called?

• viscosity
• patterns
• friction
• resistance

What is produced by the friction of two surfaces rubbing against one another?

• matter
• steam
• electricity
• heat

What is the purpose of the air in air hockey?

• keeps players cool
• dries players' hands
• increases friction
• reduces friction

What is the bowling alley lane coated with to reduce friction?

• oil
• wood
• paint
• sand

What part of a car increases friction?

• color of paint
• tires
• amount of gas
• skill of driver

Patterns of motion can be used to _________.

• make predictions
• make matter
• make energy
• none of these

What causes the pendulums to form neat patterns?

• gravity
• different length of strings
• friction
• energy