# Welcome, all School Scientists!

If you are studying or teaching science in high school, this is the site for you. On this site, we help you prepare for tests and examinations at all high school levels.

The course materials and questions have been prepared by professional teachers with many years of experience in the classroom. We would be happy to hear from you if you have any problems using the site, have any questions, or have any suggestions.

You are welcome to browse around and make use of the material. There is no registration or log-in, and it is all entirely free of charge.

## Physics

Core material for all high school levels of physics. We have 4 different types of quizzes, including multiple choice, worked answers, and exam practice.

There are also labs, tutorials, and lots of hints and ideas to help you study better.

The first level (years 9 and 10) material is complete, and we are working on the advanced material. Enjoy your Physics on SchoolScientist.com!

## Mathematics

There is a full set of mathematics materials for all high school levels.

Along with formative questions, helping you learn, there is a full set of past examination paper questions, with full worked answers, to help you prepare for that big day!

#### Quote of the day...

One cannot see what one cannot see, but perhaps it is possible to see that one does not see what one does not see

#### Quadratic Solution

[ Mathematics : Vectors and Trigonometry]

If $ax^2+bx+c=0$ with $a≠0$, then: $$x={-b±√{b^2-4ac}}/{2a}$$

Read more#### Quadratic Solution

If $ax^2+bx+c=0$ with $a≠0$, then: $$x={-b±√{b^2-4ac}}/{2a}$$

#### Ohm

[ Physics : Electromagnetism]

Georg Ohm, 1789 - 1854, German physicist whose name is used as the unit for electrical resistance, the ohm (Ω).

#### Volume

[ Physics : Units and Measures]

Space occupied by an object.

#### Random Error

[ Physics : Units and Measures]

These are errors which occur with no particular pattern. They do not repeat in a regular way, and may be identified readily from a graph of results, since they stand out from the general trend of a curve.

#### Electrical Field

[ Physics : Electromagnetism]

The field lines around an electric charge which indicate the direction and magnitude of force on a positive test charge.

#### Second Law Of Motion

[ Physics : Mechanics]

Newton's Second Law of Motion: When a net force is applied to an object it changes its motion according to F = ma, where F is the net force, m is the mass, and a is the resultant acceleration.

#### Robert Hooke

[ Physics : Waves and Oscillations]

Robert Hooke, 1635 - 1703, English scientist, best known for his Hooke's Law describing the force on a spring, and his groundbreaking work with the microscope.

#### Derivative

[ Mathematics : Differential and Integral Calculus]

The derivative f(x) is a function that gives the slope of the graph of $f$ at any value of $x$, provided the curve is smooth (a tangent exists) at the value of x.

#### Tera

[ Physics : Units and Measures]

S.I. prefix = $10^{12}$

The symbol for tera: T

e.g. 1 terabyte = 1 TB = $1 x 10^{12} bytes$

#### Calculus

[ Physics : Mechanics]

A system of determining the tangents and areas of curves.

#### Euler's Number

[ Mathematics : Logarithms and Exponents]

e is irrational, and is defined by the series: $e=∑↙{n=0}↖{∞}1/{n!}$

#### Modulation

[ Physics : Waves and Oscillations]

The modification of amplitude or frequency in a carrier wave by a signal wave, so that it carries information.

#### Newton's Polynomial

[ Mathematics : Algebra and Functions]

A now antiquated technique for solving polynomials.

#### Proton Mass

[ Physics : Units and Measures]

*m*_{p} = 1.673 x 10^{-27} kg = 1.007 276 u = 938 MeV c^{-2}

#### Binary

[ Mathematics : Logarithms and Exponents]

Data expressed in 0 and 1 format, such as in the base-2 numbering system.

#### P-wave

[ Physics : Waves and Oscillations]

The P-wave is a compression (longitudinal) wave. In an earthquake, the P-wave precedes the S-wave (transverse wave). P stands for pressure, S for shear.

#### Golden Ratio

[ Mathematics : Numbers and Geometry]

Symbol φ. Approximately 1.61. The golden ratio is a commonly found pattern in nature, and is used in design and architecture for proportions, such as rectangles, since it is instinctively pleasing to the eye.

#### Logarithm

[ Mathematics : Logarithms and Exponents]

Logarithms are a technique for determining the value of t in $x^t = y$: $t = log_xy$.

#### Gamma

[ Physics : Waves and Oscillations]

The highest bandwidth of the EMR spectrum. Symbol γ

#### Product Rule

[ Mathematics : Differential and Integral Calculus]

[Mathematics: differential calculus] The product rule is a useful technique for solving the differentials of complex functions.

#### Algebra

[ Physics : Units and Measures]

A field of mathematics dealing with the manipulation and solution of complex relationships between variables, written as letters, by means of a strict set of rules.