Forces and Motion
Attractive or repulsive force caused by the polarity of magnetism–a noncontact force
What is a magnetic force?
The person who uses science to develop technology
What is an engineer?
A homogeneous mixture in which one kind of substance is dissolved into another
What is a solution?
Law that states that speed and direction of an object does not change unless acted upon by a unbalanced forces
What is Newton's first law of Motion?
The transfer of heat through direct contact
What is conduction?
A measure of distance traveled divided by a unit of time
What is speed?
The upward force exerted by a fluid on a solid object placed in a fluid
Two or more kinds of substances that have been combined physically but have not bonded chemically
What is a mixture?
Law that states that the total mass of substances stay the same beforehand after an interaction
The ability to do work and change matter
What is energy?
A machine that converts mechanical energy into electrial energy
What is a generator?
An increase of force made possibly by a machine
What is an advantage?
A neutral subatomic particle with no charge
What is a neutron?
Law that states that energy is neither created nor destroyed, only transferred
What is the Law of Conservation of Energy?
A model of a design that is used for testing
What is a prototype?
A limitation or boundary for the design process
What is a constraint?
Process in which atoms are rearranged within molecules and new substances are forced in this type of reaction
What is a chemical reaction?
A heterogeneous mixture with tiny, suspended clumps or particles
What is a colloid?
Law that states that an object’s acceleration is determined by the forces acting upon it as well as its mass
What is Newton's second law of Motion
An object lifted or moved by a machine
What is a load?
Forces that result in work
What are unbalanced forces?
The main groups of the periodic table are:
Metals, nonmetals, and
___________
What are semi-metals?
A method used to separate solid materials from one another
What is skimming?
All Substances that are either: bases, acids, or
_______
neutrals
The transfer of heat by moving liquid or gas
What is convection?