General Science & Ability

Seismograph (seismometer)

The size of an earthquake, related to the energy released at its source

A relatively narrow band of strong winds in the upper atmosphere

A seasonal reversal or major shift in prevailing winds, often associated with pronounced wet and dry seasons

Refraction, internal reflection and dispersion of sunlight in water droplets

A cloud of tiny water droplets or ice crystals suspended near Earth's surface

Water droplets formed when water vapour condenses on a cool surface

The direct change of a substance from solid to gas without passing through the liquid state

A reaction that absorbs heat from its surroundings

A reaction that releases heat to its surroundings

A chemical reaction in which a substance reacts rapidly with an oxidant, usually oxygen, and releases energy

A substance that changes in a detectable way, often colour, in response to a chemical condition such as pH