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Describe how volcanoes are monitored so that people can prepare for an eruption.

Volcanoes often show precursory activity before they erupt. Volcanologists can monitor this activity to forecast an eruption. This includes: - Monitoring earthquakes with seismometers. Just before an eruptio...
ER
Answered by E R. • Geography tutor
24657 Views

What is 'cotx'?

cot is a short way to write 'cotangent'. This is the reciprocal of the trigonometric function 'tangent' or tan(x). Therefore, cot(x) can be simplified to 1/tan(x). Using trigonometric rules, an alternative w...
LG
Answered by Lucy G. • Maths tutor
183324 Views

What is a phagocyte?

Phagocytes are types of cells found in the bloodstream and tissue. They are an important part of the immune system. They recognise foreign antigens on invading pathogens and engulf them. They then digest the...
LG
Answered by Lucy G. • Biology tutor
6265 Views

What is the difference between distance and displacement?

Distance refers to how far an object has travelled in total during its motion. Displacement refers to the object's overall change in position / how far an object is now, from it's initial position.
LG
Answered by Lucy G. • Maths tutor
12667 Views

How do you find the equation of a straight line on a graph?

Firstly you need to find the gradient and to do this you identify two points on the graph and the gradient is the change in the value of the y values divided by the change in the value of the x values. (y2-y...
OJ
Answered by Oliver J. • Maths tutor
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