Forces
What is a force?
A force is a push or pull that can change the motion of an object.
Define Mass.
Mass: A measure of matter in an object.
What are the three main types of matter?
Solid, Liquid, Gas
What is the definition of Energy?
The ability to do work or cause change.
Name three states of matter.
The three states of matter are solid, liquid, and gas.
Give two examples of forces you experience in everyday life?
Define Inertia.
Inertia: The tendency of objects to resist any change in motion.
What is the definition of Matter?
Anything that has mass and takes up space.
What are the two main types of energy?
Kinetic Energy and Potential Energy
What are the Newton's 3 laws of motion and explain them.
1. An object stays at unless acted by unbalanced force.
2. F = ma
3. All objects give an equal and opposite force.
Unbalanced forces cause moving objects to change their _____.
Motion
What is the definition of Newton?
Newton: A unit scientist use to measure force.
What happens when an object melts?
a. It changes properties
b. It changes states
c. It becomes a gas
d. Achemical change
B. It changes states
Batteries are a type of___ energy.
Chemical Energy
Give 2 example of physical properties.
1.Density
2. Melting point.
What is the difference between contact forces and non-contact forces?
Contact forces happen when objects touch each other, like pushing or pulling. Non-contact forces happen even when objects don’t touch, like gravity or magnetism.
Define System.
System: A group of interacting parts that move or work together.
What is the difference between a chemical change and a phyical change?
Chemical change- A change that can change the substance.
Physical change- A change that does not change the substance.
What is the formula for work?
Work(W)= Force(F) times Distance(D) OR W=Fd
The process by which water changes from a liquid to a gas is called __________.
Evaporation
Why do objects fall to the ground when dropped?
Objects fall to the ground when dropped because of gravity.
What's the definition of work?
Work: The transfer of energy to an object by a force that causes the object to move in the direction of that force.
What is melting? What state change occurs during melting?
Melting is a process where a substance transitions from a solid to a liquid state.
Potential Energy: Stored ____ an object has due to its _____ or condition.
Energy, position
What is the difference between transverse wave and longitudinal wave?
Transverse waves move perpendicular to the wave's direction; longitudinal waves move parallel to it.