Friction Affliction
the force that acts when two surfaces rub against each other
What is friction?
a type of friction that slows down objects as they move through the air. It is another name for air resistance.
Drag
Invisible patterns of energy caused by vibrations that travel through a medium like air, water, or solid materials
Sound Waves
the upward force that a fluid (like water or air) exerts on an object placed in it, which pushes against the object's weight.
Buoyancy
the form of electromagnetic radiation that makes vision possible
Light
Imagine you are sliding a heavy box across different floors. Would a smooth sheet of ice or a rough sheet of sandpaper give you the most friction, making the box the hardest to push?
What is a rough sheet of sandpaper
Gravity
Sound travels through different materials at different speeds. Does sound travel faster through air or water?
Air
the natural tendency of a liquid's surface to shrink into the smallest possible area, making the top layer behave like a stretched elastic sheet or "skin"
the bending or change in direction of a light ray when it passes at an angle from one transparent medium into another
Light Refraction
When you roll a toy car across a carpeted floor, it eventually slows down and stops. What do we call the invisible force that fights against the moving car to slow it down?
What is friction?
If you drop a heavy bowling ball and a fluffy feather at the same time on Earth, why does the feather float down so much slower?
Greater air resistance on the feather
The feather is lighter where the bowling ball is heavier
What do we call a sound that is high (like a squeaky mouse) or low (like a roaring lion)?
Pitch
A closed can of diet soda will do what in water?
the bouncing back of light rays when they hit a surface and return into the same medium
Light Reflection
When you squeeze the handbrakes on a bicycle, rubber pads clamp down onto the metal wheels to make you stop. How do these brakes use friction?
Friction slows down and stops the wheel from moving
Why are parachutes made to be big and wide when skydivers use them?
to catch a lot of air resistance to make the fall nice and slow
Have you ever shouted "Hello!" in a big, empty gym and heard your voice bounce back to you a moment later? What is this called?
Echo
How do tiny water strider bugs manage to walk across a pond without sinking like a stone?
Their super light feet do not break the water's stretchy surface skin
When white light goes through a prism, what will happen to the white light
It will bend and turn into the colors of the rainbow
Brrrr! On a cold winter day, you rub your hands together quickly and they start to feel nice and warm. What causes this magic trick of warmth?
Friction between your rubbing hands creates heat energy
Why do race cars and modern airplanes have sleek, curved, and pointy shapes instead of being shaped like big square boxes?
To create lower air resistance
When sound is louder or softer, we refer to it as what?
Volume
If you use a dropper to put water on a penny, it builds up into a cool little rounded dome shape. Why doesn't it spill flat right away?
The water droplets hold tightly together
When you put a straight straw into a glass of water, it looks like it is broken or bent right at the water's surface! Why does this happen?
Light bends (refracts) as it moves from the water into the air.