Science Quiz 10/17

Study for tests

collision

the act of colliding; a coming violently into contact; crash. An interaction between 2 objects

Energy

the capacity for vigorous activity; available power.

Law of conservation of energy

the principle that in a system that does not undergo any force from outside the system, the amount of energy is constant, irrespective of its changes in form.

Kinetic energy

the energy of a body or a system with respect to the motion of the body or of the particles in the system. The energy of motion

Potential energy

the energy of a body or a system with respect to the position of the body or the arrangement of the particles of the system. Stored energy

Energy Transfer

 the movement of energy from one location or object to another, or the conversion of energy from one form to another.

Energy Transformation

the process of changing energy from one form to another

Sound energy

a form of mechanical energy that travels as longitudinal waves through a medium like air, water, or solids

Thermal (heat) energy

the energy of a body or system that is directly related to its temperature.

Contact force

a push or pull that occurs when two objects are in direct physical contact with each other.

Non contact force

a force that acts on an object without physical contact.

deformation

the act of deforming; deform; distortion; disfigurement

Gravity

the force of attraction by which terrestrial bodies tend to fall toward the center of the earth.

Newton (N)

the standard unit of force in the International System of Units (SI), equal to the force that produces an acceleration of one meter per second per second on a mass of one kilogram. N

Balanced Forces

two or more forces acting on an object that are equal in strength and opposite in direction, resulting in a net force of zero.

Unbalanced Forces

 a net force that causes a change in an object's motion, such as its speed or direction, because the forces acting on it are not equal and opposite.

Net forces

the total force acting on an object, calculated as the vector sum of all individual forces.

Friction

Physics.,  surface resistance to relative motion, as of a body sliding or rolling.

What is the original source of nearly all energy on Earth

the sun