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Why are there both earthquakes and volcanoes at convergent plate boundaries?

Convergent plate boundaries, also known as destructive plate boundaries, occur when 2 plate boundaries move towards one another due to convection currents in the mantle. The oceanic crust is subducted (force...
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Answered by Alice H. • Geography tutor
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Why do hurricanes form in some places but not others?

Hurricanes will only form where the sea surface temperature is 27 degrees C or above. This area of the ocean is located between the Tropics of Cancer and Capricorn, otherwise known as the ITCZ. The sea surfa...
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Answered by Alice H. • Geography tutor
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Solve the simaltaneous equations: 3x + 4y = 10, 2x + 3y = 7

Solving by elimination 1. multiply the equations by a number so that the number in front of either x or y is the same for both equations: 3x + 4y = 10 (X2) --> 6x + 8y = 20 2x + 3y = 7 (X3) --> 6x + 9y...
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Answered by Sarah T. • Maths tutor
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How can I work out whether a hydrocarbon is an alkene or an alkane from its molecular formula?

Step 1: Look at the molecular formula of the hydrocarbon you have been given. (This is the formula that tells you exactly how many hydrogens and how many carbons are present.) Step 2: * Refer back to the gen...
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Answered by Alice H. • Chemistry tutor
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‘What do the buildings in the Roman forum tell us about how the forum was used during the Republic?’

The Roman forum was both a political and religious centre. Various temples and shrines improved the appearance of the forum and served the dual purpose of being used for both religious and political purposes...
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