Show:
Physics
Atom
Energy
Physical Science
Nature of Science
100
the rate of change of velocity per unit of time.
What is acceleration
100
the basic unit of a chemical element.
What is an atom
100
either of two units of heat energy.
What is calorie
100
The physical process where matter moves from one state to another.
What is Change of state
100
a variable (often denoted by y ) whose value depends on that of another
What is Dependent Variable
200
In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid.
What is air resistance
200
a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
What is an electron
200
the conversion of a vapor or gas to a liquid.
What is condensation
200
Chemical changes occur when a substance combines with another to form a new substance
What is Chemical change
200
a variable (often denoted by x ) whose variation does not depend on that of another
What is an independent variable
300
the maximum extent of a vibration or oscillation, measured from the position of equilibrium.
What is amplitude
300
each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms.
What is an element
300
the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
What is Conduction
300
a complete and closed path around which a circulating electric current can flow.
What is circuit
300
a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact
What is experiment
400
the top of something, especially a mountain or hill.
What is crest
400
a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
What is a neutron
400
a principle stating that energy cannot be created or destroyed, but can be altered from one form to another.
What is Conservation of energy
400
a thing that is composed of two or more separate elements; a mixture
What is a compound
400
the action of investigating something or someone; formal or systematic examination or research.
What is Investigation
500
the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge
What is diffraction
500
a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
What is proton
500
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat
What is Convection
500
the degree of compactness of a substance
What is density
500
not consistent or having a fixed pattern; liable to change
What is Variable