Lesson 3.1.3.5
3.1.3.5 Coasts: quantitative and qualitative skills Quiz: AQA Geography, Unit 1
20 questions
In partnership with Revision Ninja
Lesson 3.1.3.5, Coasts: quantitative and qualitative skills: 20 multiple choice questions for the AQA Geography (7037), Unit 1: Physical geography, written with Revision Ninja.
Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.
The 20 questions
-
A beach profile survey records heights at 5 m intervals along a transect. Which field instrument is most appropriate?
- A hand-held anemometer, which measures the speed of the wind at the surface of the beach
- A clinometer used with a ranging pole or a level and staff
- A pH meter, which measures the acidity of the seawater at the point of sampling
- A Secchi disc, which measures the transparency of the water column in a lake or the sea
-
Which statistic best describes the central tendency of beach gradient values with one very steep outlier?
- The median gradient
- The mean gradient, which is unaffected by outliers because every value contributes equally to it
- The sum of all gradient values, which gives the total slope along the whole surveyed transect
- The range of gradients, which summarises the spread between the lowest and highest values
-
Spearman's rank correlation between beach slope and grain size gives rs = -0.72. Which interpretation is most appropriate?
- A perfect linear relationship with a slope of -0.72 between the two measured variables
- No association, because a negative coefficient means the two variables are unrelated
- A strong negative rank association, where steeper beaches tend to have coarser sediment
- A weak positive association, where steeper beaches have finer sediment on their surface
-
Which map skill is most important for analysing coastal change between two dates?
- Measuring the colour of cliffs on a single photograph, which shows the rock type only
- Estimating coastal change from a single map of the seabed, which shows the depth of the water
- Counting the number of boats moored along the shore at a single point in the year
- Overlaying dated coastline maps or images to measure shoreline movement
-
A cliff retreats by 1.2 m per year. How far will it retreat in 25 years?
- 300 m, which is obtained by multiplying the rate by 250 rather than by the 25 years
- 20.8 m, which is obtained by dividing the 25 years by the rate of 1.2 m per year
- 30 m
- 1.2 m, which is the retreat in a single year and not the total over 25 years
-
Which sampling approach best captures variation in wave energy along a bay?
- Measuring only at the bay entrance on one calm day, which gives a single reading for the whole bay
- Measuring at systematically spaced sites across the bay and at different tide states
- Measuring only at the highest point of the cliff, where the waves are least able to reach
- Measuring only where people go swimming, which is the most convenient location for the survey
-
Which graphical method best represents the frequency distribution of pebble sizes on a beach?
- A pie chart of pebble colours only, which shows the proportion of each colour in the sample
- A histogram with pebble size classes on the horizontal axis
- A line graph of pebble size against time, which shows how the sizes change through the year
- A scatter plot of pebble mass against tide height, which shows the mass for each tide level
-
Which error is most likely when a beach profile survey is conducted by different observers using different methods?
- Systematic error arising from inconsistent measurement technique between surveys
- Error caused by the colour of the survey pole, which affects the visibility of the markings
- Error caused only by weather conditions on the day, which affects every method in the same way
- Random error that is always eliminated by averaging the readings from all of the observers
-
Which result from a coastal field survey would best support a claim of rapid recent erosion?
- A local resident's opinion that the cliff has changed, which has not been measured or recorded
- An observation that the beach looked wide on one day, which is a single impression
- Repeated surveys showing a consistent landward retreat of the cliff top over several years
- A single photograph of the cliff taken at high tide, which shows the state of the base only
-
A chi-squared test compares observed and expected counts of beach sediment types. What does a large chi-squared value indicate?
- The sediment types are all of the same size, which removes the need for any statistical test
- The observed counts are identical to the expected counts, so the test shows no difference at all
- The sample size is too small to analyse, so the result of the test cannot be used
- The observed counts differ substantially from the expected counts
-
Which quantitative method best estimates the volume of sand gained by a beach between two surveys?
- Counting the number of tourists on the beach each day and multiplying by the average sand depth
- Calculating the cross-sectional area at each survey and integrating the change along the beach length
- Measuring the average wave colour across the bay and converting it into a volume of sand
- Estimating the beach mass from its visual brightness in a photograph taken at midday
-
Which qualitative skill is most important when evaluating a coastal management scheme?
- Ignoring the views of local communities, which are seen as less reliable than measured data
- Judging the scheme only by its cost, which is the simplest measure to obtain from the accounts
- Relying solely on the scheme's own promotional material, which describes its intended benefits
- Considering stakeholder views alongside measured outcomes such as erosion rates
-
Which measure of spread is most suitable for a set of beach slope values that is not normally distributed?
- The mean deviation calculated from a normal curve fitted to the slope values in the sample
- The sum of all the slope values, which gives the total slope across the survey transects
- The interquartile range
- The number of values measured, which indicates how many transects were surveyed in total
-
What is the main purpose of recording a fetch value in a coastal study?
- It measures the depth of the beach sand, which is used to calculate the volume of the beach
- It identifies the type of rock in the cliff, which is used to classify the coastal landform
- It records the height of the tide at high water, which is used to set the survey datum
- It quantifies the distance over which wind acts on the water, a key control on wave energy
-
A beach has an average slope of 1:20. What is the gradient expressed as a percentage?
- 2 per cent, which is obtained by dividing the run of twenty by one hundred and then doubling it
- 20 per cent, which is the run divided by the rise and then expressed as a percentage
- 5 per cent
- 0.5 per cent, which is obtained by dividing the rise of one by two hundred
-
Which data-analysis step is most important when comparing the beach profile at two dates?
- Discarding all measurements taken during storms, which removes the most informative data
- Using a different instrument for each survey date, so that each survey is independent of the others
- Standardising the survey locations so the profiles are comparable
- Changing the vertical scale only for one of the surveys, so that the profiles look more similar
-
Which conclusion is best supported by a scatter graph showing that sediment size decreases with distance from a cliff?
- Sediment size is entirely caused by distance from the cliff, with no other factor having any influence
- There is no pattern because the points are scattered, which shows that size and distance are unrelated
- The relationship is proven to be perfectly linear, so every point lies exactly on the line
- There is a negative relationship between sediment size and distance from the cliff, which should be tested statistically
-
Which factor is most likely to limit the reliability of a single-day beach survey?
- The colour of the survey equipment, which can make the markings harder to read in the sun
- The time of day the survey began, as long as it was in daylight and the tide was out
- Short-term tidal and wave conditions that may not represent typical conditions
- The number of observers present, which has no effect on the reliability of the readings
-
Which result best illustrates a positive sediment budget for a beach?
- The beach receives no sediment but still grows, because waves build it up from the sea floor
- Sediment losses exceed gains, so the beach shrinks over the period of the survey
- Sediment is neither gained nor lost over the year, so the beach stays exactly the same
- Sediment gains from longshore drift and cliff erosion exceed losses, so the beach grows
-
Which measure would best summarise the variability of wave heights in a survey?
- The colour of the sea surface, which reflects the amount of sediment in the water column
- The standard deviation of the measured wave heights
- The number of waves observed, which counts the waves that passed the survey point
- The highest wave height recorded only, which shows the most extreme value in the survey
Related quizzes
- Water and carbon cycles as natural systems Quiz · 3.1.1.1 · 20 questions
- The water cycle Quiz · 3.1.1.2 · 20 questions
- The carbon cycle Quiz · 3.1.1.3 · 20 questions
- Water, carbon, climate and life on Earth Quiz · 3.1.1.4 · 20 questions
- Water and carbon cycles: quantitative and qualitative skills Quiz · 3.1.1.5 · 20 questions
- Water and carbon cycles: case studies Quiz · 3.1.1.6 · 20 questions
- Deserts as natural systems Quiz · 3.1.2.1 · 20 questions
- Hot desert systems and processes Quiz · 3.1.2.2 · 20 questions
- Arid landscape development in contrasting settings Quiz · 3.1.2.3 · 20 questions
- Desertification Quiz · 3.1.2.4 · 20 questions