GradeGen

The distance between corresponding points on consecutive waves, such as from one crest to the next, measured in metres.

The distance between corresponding points on neighbouring waves, such as from one wave crest to the next.

Radiation can transfer energy through space; it does not need particles to carry it. Its wavelength is the distance between neighbouring wave crests.

The distance from a point on one wave to the equivalent point on the adjacent wave. Its symbol is $\lambda$ and its unit is the metre (m).

State which radiation is absorbed by which material: the Earth's surface absorbs incoming short-wavelength radiation; greenhouse gases absorb outgoing long-wavelength infrared radiation.

Include both short and long wavelengths when describing the greenhouse effect. This requirement applies to both tiers.

Check the horizontal axis: a distance axis gives wavelength; a time axis gives period.

The distance between equivalent points on adjacent waves, such as crest to crest, measured in metres (m).

The distance between corresponding points on consecutive waves, such as neighbouring crests or the centres of neighbouring compressions, measured in metres (m).

Amplitude and wavelength are both measured in metres, but describe different features.

The distance between matching points on consecutive waves, such as one crest and the next, measured in metres (m).

The distance between corresponding points on consecutive waves, such as two adjacent crests, measured in metres.

Wavelength

Definition

How each exam board covers it

AQA GCSE Combined Science Trilogy · 8464

Exam tips

Revise Combined Science with GradeGen

Edexcel GCSE Combined Science · 1SC0