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The highest point of a wave
crest
The lowest point of a wave
trough
This is what happens when two or more waves meet and their effects are added together
interference
It depends on the sound wave’s energy and tells the loudness or quietness of a sound
amplitude
Amplitude is measured in (unit)
meter
Frequency is measured in (unit)
hertz
High frequency waves have _______________ wavelength
short
A device used to view oscillations of waves
oscilloscope
supercontinent on Earth that broke apart about 175 million years ago
Pangea
Movement of heated liquid particles rising upwards and particles that are cooling falling downwards
convection current
Layer of the earth that is not a runny liquid like water that can flow slowly and make the tectonic plates move
mantle
A type of rock that contains minerals that can be magnetised. Movement of these rocks is a strong evident of plate tectonic movement.
basalt
A plant that lived on Pangea but became extinct over 175 million years ago; fossils found today provide evidence for plate movement.
glossopteris
Plants acts as a natural way of storing carbon dioxide. They are called ______
sink
Organelle where respiration happen
mitochondria
Organelle where photosynthesis happen
chloroplast
