Safety Symbols and Measurements

Front

Atomic mass unit (a.m.u.)

Back

Unit of mass used to express atomic and molecular weights, approximately equal to the mass of one proton or neutron.

Front

Period numbers indicate the number of energy levels an element has.

Back

Front

Refrigerators

Back

Transfer thermal energy from inside to the outside.

Front

Sound travels in compression (longitudinal) waves and at a speed much slower than light.

Back

Sound waves are mechanical waves that require a medium to travel.

Front

Sound waves in medical diagnosis.

Back

Used to create images of internal body structures.

Front

Newton's second law of motion states that the net force on an object is equal to the product of its acceleration and its mass.

Back

This can be expressed as F = ma.

Front

Diagram showing the force of gravity between objects.

Back

This diagram illustrates gravitational attraction.

Front

Due to friction, the work put into a machine is always greater than the work output.

Back

Front

Parallel Circuit

Back

An electrical circuit with more than one path for the current to flow. As you add lights, they remain the same. If one light goes out, the others stay lit. Example: Household lights.

Front

Current Flow in Parallel Circuit

Back

More than one path for current to flow.