Very Very Simple
This simple machine consists of a flat surface, inclined at an angle to help lift heavy objects
Inclined Plane
This law says that in a closed system, the total amount of matter remains constant over time.
Conservation of Mass
A type of change that occurs when new substances are formed.
Chemical Change
What simple machine is found in scissors?
A Lever
When a ball is sitting at the top of a hill and not moving, what kind of energy does it have?
Potential
This simple machine is a wheel with a rope or chain wrapped around it, often used to lift or pull objects.
Pulley
This law says that energy cannot be created or destroyed, only transformed from one form to another
Conservation of Energy
The force that pulls atoms together.
Chemical bond
What tool is used to tighten or loosen a bolt?
A Wrench
When the ball rolls down the hill, what kind of energy does it have?
Kinetic
This simple machine is a bar or solid flat thing that pivots on a point, called the fulcrum, and is used to lift or move a load.
Lever
When a ball bounces off a wall --- which combines mass and velocity, is preserved, as long as there are no unbalanced forces.
Momentum
Evidence that a chemical change is happening to a substance.
A temprature rising or a substance boiling
What is the name of the force that slows things down when they rub together?
Friction
Which has more potential energy: a book on the floor or a book on a shelf?
The book on the shelf
This simple machine is made up of a circular object that rotates around a central point and is used to transfer force
Gear and Axle
The masses of the reactants and the products in a chemical reaction according to the Law of conservation of mass should always be ------.
Equal
Makes everything we touch up.
Atoms
What type of energy involves heat?
Thermal energy
When you're swinging on a swing. If you are at the highest point and stop what type of energy is that?
Potential Energy
X2 Points!
In a compound machine, the simplest form of lever is often paired with a pulley or a wheel and axle in an effort to improve performance. An example would be the pairing in what everyday object?
Bicycle
By definition, the Law of Conservation of Mass states that matter may not be ----- nor ------.
Created nor Destroyed
NaCl
This part of a machine reduces friction by using metal balls to move smoothly. Typically found in wheels and fidget spinners.
Bearings
When you're running, what kind of energy are you using?
Kinetic