Singapore A-Level H2 Geography central themes overview quiz (SEAB 9751) quiz

There is no real difference between the two, since stating clearly what a pattern looks like is itself the explanation

Explaining simply means listing a greater number of factual details about the pattern that has been observed on the map

Describing states what the pattern looks like; explaining gives the processes and reasons that produce it

Describing the pattern always scores higher in essays, because a full and accurate account of the distribution is what is rewarded

It cools the rising air and so halts uplift, which is why cyclones tend to weaken rapidly over warm tropical seas

It freezes the ocean surface beneath the storm, removing the supply of moisture that the developing cyclone needs

It plays no role whatsoever in the formation of a tropical cyclone, which is driven only by surface wind shear

It warms rising air, increasing buoyancy and driving further uplift in a self-intensifying feedback

The difference in ranks between the paired values for each observation

The total number of observations in the data set, which is the value given separately by $n$ in the formula

The mean of the data set, calculated by summing all the values and dividing by the number of observations

The critical significance value against which the final computed coefficient is compared to judge the result

A strong positive correlation, in which higher ranks in one variable consistently pair with higher ranks in the other

A strong negative correlation: as one variable rises in rank, the other tends to fall

No correlation at all between the two variables, which is what a coefficient close to zero would normally indicate

A calculation error, since the value of $r_s$ can never be negative and must always fall between $0$ and $+1$

The mean of a single data set, found by summing all the values collected and dividing by the number of observations

The gradient of a slope, measured as the change in height over the horizontal distance across a stretch of ground

Whether an observed frequency distribution differs significantly from an expected one

The wavelength of incoming waves, measured as the horizontal distance between one wave crest and the next one

The slow movement of the Earth's tectonic plates across the surface of the globe over very long spans of geological time

A long-term change in the major global wind patterns, such as the trade winds and the prevailing westerlies of each hemisphere

The gradual migration of coral reefs towards cooler waters as ocean temperatures rise under contemporary climate change

The relocation of manufacturing and services from developed economies to lower-cost regions, especially in Asia

Their root systems trap sediment and dissipate wave energy, reducing erosion and buffering storm surge

They increase the wave energy reaching the shore, which concentrates erosive force and accelerates coastal retreat

They prevent any sediment from being deposited at the coast, so the shoreline is steadily starved of new material

They raise the local sea level around the coast, pushing the high-water mark steadily further inland over time

Between two identical economic goals that, despite appearances, actually pull policy in precisely the same direction

Between pursuing economic growth and respecting environmental limits, while meeting social needs

Between physical and human geography as academic subjects, which study the world in fundamentally incompatible ways

Between two rival statistical methods of calculating the mean of a sample, each giving a slightly different result

Because it simply makes the essay longer and more impressive by filling it with extra place names and figures

Because a detailed case study removes the need for any explanation, since the named evidence can speak for itself

Because specific, named evidence grounds the argument and demonstrates real geographical understanding

Because generic, unlocated statements score exactly the same as detailed case studies in the eyes of the marker

Because the calculation of the test statistic is entirely optional, and a geographical hypothesis can be judged perfectly well by interpretation alone

Because interpreting the significance of a result needs no data at all, since the meaning follows directly from the formula

Because a statistically significant result always indicates a positive correlation between the two variables being studied

Because significance tells you whether the result likely reflects a real relationship rather than chance, which answers the hypothesis

Because the appropriate measure of central tendency and spread depends on the data's distribution and type, or it can mislead

Because all data sets are essentially identical, so the very same descriptive statistic can safely be applied to every one

Because the mean is always the single best measure of central tendency, regardless of the distribution or any outliers present

Because the spread or variability of the data does not matter at all in geography, so only the central value need be reported

Because it lets you ignore physical geography entirely and concentrate solely on the human side of the syllabus

Because it connects physical and human systems, supporting an integrated, evaluative argument

Because the synoptic theme requires no supporting evidence, since its broad concepts can stand on their own in an essay

Because it only ever applies to one narrow topic and so can simply be set aside when answering most essay questions