. A company has made a new material called ‘Wellwarm’. They want to use ‘Wellwarm’ to make coats. (a) A scientist tested ‘Wellwarm’ to see how well it insulated a beaker of hot water. She tested ‘Wellwarm’ and three other materials as shown below. She wrapped each beaker in a different material. She recorded the temperature at the start and 20 minutes later. (i) What was the independent variable that the scientist changed? (ii) What was the dependent variable that the scientist measured during the investigation? (b) The results of the investigation are shown below. time (minutes) temperature of water (°C) wrapped in material A material B material C material D 0 60 60 60 60 20 34 40 38 36 material A material B material C material D thermometerlidPrimaryTools.co.ukPrimaryTools.co.uk KS3/09/Sc/Tier 3–6/P1 19 Total 8 9c 1 mark 9bii 1 mark 9c 1 mark 9d 1 mark 9e 1 mark (i) The scientist said that the ‘Wellwarm’ material is the best insulator. Which material was ‘Wellwarm’? Use the results to help you. Tick the correct box. (ii) Use the evidence in the results table to explain your choice. (c) The company made a coat from each of the four materials they tested. A person tested the different coats by wearing each one in a cold room. He measured the temperature inside each coat for 30 minutes. Write down two other variables that should be controlled to make this a fair test. 1. 2. (d) Write down one thing the scientists should do to make sure the person testing the coats is safe. (e) Suggest one advantage of using a temperature sensor and data logger instead of a thermometer in this experiment. maximum 8 marks 9bi 1 mark

t variable, suggest a piece of equipment that could beused to measure it and the units of measurement that are most appropriate.The independent variable is the variable that you change or select the values for.The dependent variable is the variable that is measured for each change of the independentvariable.1. A student investigated how the number of bulbs in a series circuit affected the current.4. A student investigated how the temperature of a greenhouse is affected by the materialit is made from.2. A student investigated whether the time it takes for a chemical reaction to finish isaffected by the volume of a reactant.3. A student investigated how the force applied to a spring affects how much the springstretches.5. A student investigated how the speed of a ball is affected by its mass.independent variabledependent variableequipmentindependent variabledependent variableequipmentindependent variabledependent variableequipmentindependent variabledependent variableequipmentindependent variabledependent variableequipmentunitsunitsunitsunitsunits

Write down what the independent and dependent variables are in this experiment.

In experimental research the dependent variable  is the condition that you measure in an experiment.Group of answer choicesTrueFalse

Students measured the temperature of the water at different depths in the Vaaldam and found that the temperature varied.Identify the:Independent variable: Blank 1 Question 6Dependent variable: Blank 2 Question 6Controlled variable: Blank 3 Question 6

Here is a write up of an experiment on heat transfer. The independent variable in this experiment is the _________ of the container. What one word completes the sentence?