Btec Applied Science Unit 3
What is a hypothesis? - question and answerAn Idea that you can test using practical
experiments
What are the Key features of a good hypothesis? - question and answerA good
Hypothesis must:
Be able to be tested scientifically
Relate one dependent variable to on independent variable
What is a Null Hypothesis? - question and answerStates that there is no relationship or
causality, for example, no relation between the temperature and the rate of reaction.
What does qualitative data refer to? - question and answerIt refers to the appearance or
value of something, such as the colour observed or whether the bubbles are produced.
What does Quantitative data refer to? - question and answerIt refers to numerical
measurements made, such as the volumes and times measured.
What is SOP? - question and answerThe Standard Operating Procedure. This is an
established procedure or method used to carry out a routine activity. It ensures
consistent results every time.
What are some examples of SOPs? - question and answerTitration, Handling of
chemicals, disposal of waste, qualitative analytical tests, preparing solutions
What are risk assessments? - question and answerIt identifies hazards, evaluates the
risks associated with those hazards and it determines ways to eliminate or control those
risks.
What is a Hazard? - question and answerWhen the equipment or substance can cause
harm, for example a hot plate or hydrochloric acid
What is a risk? - question and answerThe harm that the hazard could cause and the
chances of it happening, for example the risk of using a hot plate is getting burnt.
What is the independent variable? - question and answerThe variables you change
during an investigation.
, What is the Dependent variable? - question and answerThe variables you are
investigating and measure during an investigation.
What is the control variable? - question and answerThe variables you keep constant
during an investigation.
What should a method be? - question and answerA step-by-step set of instructions, Be
logically ordered, allows you to take sensible measurements, and allows you to test
your hypothesis.
When planning your method what do you need to make sure? - question and
answerThat it will procedure a range of results, reliable results, precise results, and
accurate results.
What are some types of data? - question and answerThe data can be continuous such
as the age of plant ir number of plants. Some data can be a mixture of numbers and
names such as the number of different types of plants found in a garden.
What data is normally displayed on a bar chart? - question and answerContinuous data.
You need to make sure its a smooth curve of best fit, and that the curve goes through or
near most of the points.
What are bar charts used for? - question and answerThey are used for discrete data but
can be used to compare different sets of data.
What is the Pattern on the graph? - question and answerThe shape of the graph. It is
the line that goes up as time goes by but eventually levels off
What is the trend on a graph? - question and answerThe relationship between factors
on the graph or in the table. The full trend is that the volume increases as the time
increases but then levels off after a certain amount of time.
What is the sample size? - question and answerThe number of people sampled in the
investigation. To be confident in your conclusions you need a large sample size to give
strong evidence.
What is Primary data? - question and answerThis is the data that you have gathered for
yourself through the experiments or investigations .
What is secondary data? - question and answerThe data that you get in books, scientific
papers or the internet. You should compare your primary and secondary data to draw a
conclusion
How do you know if the data is anomalous? - question and answerIt doesn't fit into the
pattern of the other results. It does not lie close to the line of best fit.
What is a hypothesis? - question and answerAn Idea that you can test using practical
experiments
What are the Key features of a good hypothesis? - question and answerA good
Hypothesis must:
Be able to be tested scientifically
Relate one dependent variable to on independent variable
What is a Null Hypothesis? - question and answerStates that there is no relationship or
causality, for example, no relation between the temperature and the rate of reaction.
What does qualitative data refer to? - question and answerIt refers to the appearance or
value of something, such as the colour observed or whether the bubbles are produced.
What does Quantitative data refer to? - question and answerIt refers to numerical
measurements made, such as the volumes and times measured.
What is SOP? - question and answerThe Standard Operating Procedure. This is an
established procedure or method used to carry out a routine activity. It ensures
consistent results every time.
What are some examples of SOPs? - question and answerTitration, Handling of
chemicals, disposal of waste, qualitative analytical tests, preparing solutions
What are risk assessments? - question and answerIt identifies hazards, evaluates the
risks associated with those hazards and it determines ways to eliminate or control those
risks.
What is a Hazard? - question and answerWhen the equipment or substance can cause
harm, for example a hot plate or hydrochloric acid
What is a risk? - question and answerThe harm that the hazard could cause and the
chances of it happening, for example the risk of using a hot plate is getting burnt.
What is the independent variable? - question and answerThe variables you change
during an investigation.
, What is the Dependent variable? - question and answerThe variables you are
investigating and measure during an investigation.
What is the control variable? - question and answerThe variables you keep constant
during an investigation.
What should a method be? - question and answerA step-by-step set of instructions, Be
logically ordered, allows you to take sensible measurements, and allows you to test
your hypothesis.
When planning your method what do you need to make sure? - question and
answerThat it will procedure a range of results, reliable results, precise results, and
accurate results.
What are some types of data? - question and answerThe data can be continuous such
as the age of plant ir number of plants. Some data can be a mixture of numbers and
names such as the number of different types of plants found in a garden.
What data is normally displayed on a bar chart? - question and answerContinuous data.
You need to make sure its a smooth curve of best fit, and that the curve goes through or
near most of the points.
What are bar charts used for? - question and answerThey are used for discrete data but
can be used to compare different sets of data.
What is the Pattern on the graph? - question and answerThe shape of the graph. It is
the line that goes up as time goes by but eventually levels off
What is the trend on a graph? - question and answerThe relationship between factors
on the graph or in the table. The full trend is that the volume increases as the time
increases but then levels off after a certain amount of time.
What is the sample size? - question and answerThe number of people sampled in the
investigation. To be confident in your conclusions you need a large sample size to give
strong evidence.
What is Primary data? - question and answerThis is the data that you have gathered for
yourself through the experiments or investigations .
What is secondary data? - question and answerThe data that you get in books, scientific
papers or the internet. You should compare your primary and secondary data to draw a
conclusion
How do you know if the data is anomalous? - question and answerIt doesn't fit into the
pattern of the other results. It does not lie close to the line of best fit.
