Plate Tectonics
Notes Loading the Earth map data uses approximately 6MB of data. Users who are sensitive to mobile data usage should consider this before accessing the page. Plate Tectonics Plate tectonics is the theory that Earth’s surface … more
Inquiry Learning
Recrystallization (Principle of precipitation)
Lower the temperature to precipitate some of the substances as a solid, then filter them through filter paper. Recrystallization Recrystallization is a method of separating and purifying a substance by using the property that the amount … more
Seismic wave observation and the discovery of the outer core
Seismic Wave Observations and the Discovery of the Outer Core The process by which Earth’s internal structure—especially the existence of the outer core—was revealed through seismic wave observations is a major discovery in Earth science. When … more
Distillation
Distillation Distillation is a common method used to separate liquid mixtures based on differences in their boiling points. When a liquid mixture is heated, the component with the lower boiling point vaporizes first. The vapor is … more
Solubility
Solubility When salt dissolves in water, a clear solution is formed. This is because the solute, salt, breaks down into particles so small that they are invisible to the naked eye and mixes evenly with the … more
Pendulum Wave
Pendulum wave A ‘Pendulum wave’ is a collective wave-like phenomenon that appears when pendulums (weights) of different lengths are arranged side by side. Because each pendulum has a different period depending on its length, they oscillate … more
Direction of earth’s gravity
Scientific definitions of ‘up’ and ‘down’ We live on the surface of the Earth and are always under the influence of its gravity. When we let go of an object, it falls “down,” and when we … more
Blocklab – Biological Classification Coding
Blocklab – Biological classification coding Code the process of classifying biological organisms by assembling blocks. Enter the name of the organism you want to analyze below, then press the Enter key or click the Classify ↵ … more
Solar wind and the aurora
Solar wind The Sun emits electrically charged particles. Because the Sun is mostly hydrogen, these particles are mainly protons and electrons. They travel through space at hundreds of kilometers per second. When solar activity increases, the … more
Kinetic Molecular Model of Gases
Characteristics of Gases Unlike solids and liquids, gases have the following unique characteristics: 1. They have no definite shape or volume Gas particles move in all directions and can fill any part of a container. Therefore, … more
Solar System
Solar System All the orb bodies that revolve around the sun and their space are called the solar system. The celestial bodies that make up the solar system include the eight planets revolving around the sun … more