A(n) ____ is the smallest constituent unit of ordinary matter that has the properties of a chemical element.
What is Atom
100
the quality of being hot; high temperature.
What is Heat
100
___ is one of the four fundamental states of matter. A pure ___ may be made up of individual atoms, elemental molecules made from one type of atom, or compound molecules made from a variety of atoms
What is gas
100
a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact
What is experiment
200
The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave
What is Wavelength
200
A positive electric charge of +1e elementary charge and mass slightly less than that of a neutron
What is Proton
200
In physics, _____ is the property that must be transferred to an object in order to perform work on – or to heat – the object, and can be converted in form, but not created or destroyed.
What is energy
200
a solid geometric figure whose two end faces are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms.
What is prism
200
The action of ______ something or someone; formal or systematic examination or research.
What is investigation
300
A region around the minimum on a curve of variation of a quantity.
What is trough
300
The _______ is a subatomic particle, symbol n or n0 with no net electric charge and a mass slightly larger than that of a proton
What is Neutron
300
the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.
What is radiation
300
physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
What is matter
300
A set of connected things or parts forming a complex whole, in particular.
What is system
400
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, typically accompanied by interference between the wave forms produced.
What is Diffraction
400
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 _______ is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms.
What is Element
400
either of two units of heat energy:
1. the energy needed to raise the temperature of 1 gram of water through 1 °C (now usually defined as 4.1868 joules).
or
2. the energy needed to raise the temperature of 1 kilogram of water through 1 °C, equal to one thousand small calories and often used to measure the energy value of foods.
What is Calorie
400
A ______ is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. As such, it is one of the four fundamental states of matter (the others being ----,
---, and ------), and is the only state with a definite volume but no fixed shape.
What is liquid
400
Not consistent or having a fixed pattern; liable to change.
What is variable
500
The _____ of a periodic variable is a measure of its change over a single period.
What is amplitude
500
The ________ is a subatomic particle, symbol e− or β− , with a negative elementary electric charge
What is Electron
500
a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system.
What is entropy
500
a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.
What is wedge
500
A method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.