Simple Machines
A simple machine makes a job easier to do work because it ________ the ________ to move the object
Reduces or Decreases
Force
When light bounces back, it is called what?
Reflection
How is sound produced?
Sound waves are made and create a vibration that is heard by the ears.
If Miss Mink stood on a chair and dropped an apple. What would cause the apple to fall to the ground?
The force of gravity on the apple
If you look into a pond and see your face, is this reflection or refraction?
Reflection
What type of simple machine is a scissors an example of?
Lever or Wedge
When light bends, this is called what?
Refraction
THINK FRACTION BAR
How can sound be changed?
By moving the object, hitting/strumming the object harder or softer, etc.
Bentley and Winston were pulling a rope back and forth. Bentley eventually pulled hard enough and got the rope. What kind of force is this an example of?
(HINT: balanced or unbalanced)
Unbalanced
What is one simple machine you might find on the playground?
Inclined Plane, pulley, etc.
What is an example of a pulley?
Flagpole, fishing rod, well
If you use a prism, white light is passed through it, and what comes from the other side?
Multiple colors, the rainbow, ROYGBIV
What does it mean if something is opaque, translucent, and transparent?
Opaque: Cannot see any light through
Translucent: Can see SOME light through
Transparent: Can see most or ALL light through
Gravity ______ people to the center of the Earth.
Pulls
If Miss Mink and Mrs. Chapman put their hands together, and both push against each other's hands. If we push with the same amount of force, will either of us move?
Yes or No, explain!!
No, the forces are balanced between us!
What simple machine makes the distances further but makes moving something easier?
Inclined Plane
When you put your hand in the pool, and your hand looks like it is beside where your actual hand is, what is that called?
Refraction
What is an example of an opaque, translucent, and transparent object?
Opaque: Chair, table, book, etc.
Translucent: Sunglasses, curtains, shirt, etc.
Transparent: Window, glass, ziplock bag, etc.
What type of simple machine is on top of a water bottle?
Screw
Name an example of natural and artificial light.
Natural: Sun, stars, fire, fireflies, etc.
Artificial: Light bulbs, flashlights, etc.
If I needed to move a lot of watermelons, what simple machine could I use?
Wheel and Axle
White light is made up of a lot of different colors. What are these colors usually called?
The rainbow or ROYGBIV
How are light and sound similar?
(Think about how they travel)
They both travel in waves
You need to cut a cake in half.
What is a tool you could use and what is the name of that simple machine.
A knife
A wedge
What causes sound?
Vibrations