Friction 4-8
When you rub your hands together, what do you feel?
Heat
T or F - friction is always bad
False! We need friction for things like walking and breaking
What’s the 10th letter of the alphabet?
When you add, you combine numbers to get their:
Sum
🇺🇸
United States of America
Which has more friction: socks on a smooth floor or shoes on a carpet?
Shoes on a carpet
Name one factor on which friction depends
Smoothness/roughness of a surface, speed of object rubbing against
What might appear in the sky if the sun comes out while it’s raining?
Rainbow
What gas do humans need to breathe?
Oxygen
🇸🇪
Sweden
A skateboard rolls more easily on smooth pavement because there is less _______?
Friction
Why do car tires have grooves and patterns on them?
To increase grip/friction on the road
What do plants grow from?
Seeds
Uni- means one. Bi- means two. Which prefix is used for three?
Tri-
Eg. Unicycle, Bicycle, Tricycle
🇧🇪
Belgium
Which ramp from Tuesday's activity caused the car to move the slowest? Why?
The lego! It produced the most friction between the ramp and the car wheels
What energy transfer takes place when you rub your hands together?
Kinetic energy ---> Thermal Energy (Heat)
What is the largest country?
Russia
What is the chemical formula for water?
H2O
🇷🇺
Russia
Bike breaks work because they use friction to do what?
Slow/Stop the bike
T or F - even smooth looking surfaces can have friction
True! Even smooth surfaces have tiny irregularities causing friction!
Name a planet in our solar system other than Earth
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
When does water boil in Celsius? When does it freeze?
Freezes: 0°C, Boils: 100°C
🇱🇰
Sri Lanka