3/22/25, 11:56
AM
BTEC APPLIED SCIENCE UNIT 3 EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST
UPDATE
Practice questions for this set
Learn 1/7 Study using Learn
How can you investigate the energy in food or fuel?
Select the correct definition
You can investigate the energy in food or fuel
by burning the food or fuel under a certain You can investigate energy by observing
1
volume of water using a 2the color change of the food or fuel.
calorimeter.
You can calculate energy by counting the
3 4Fuels can carry impurities that are toxic.
number of ingredients in the food or fuel.
Don't know?
Terms in this set (85)
What is a hypothesis? An Idea that you can test using practical experiments
A good Hypothesis must:
What are the Key features of a
Be able to be tested scientifically
good hypothesis?
Relate one dependent variable to on independent variable
States that there is no relationship or causality, for example, no relation
What is a Null Hypothesis?
between the temperature and the rate of reaction.
It refers to the appearance or value of something, such as the colour
What does qualitative data refer to?
observed or whether the bubbles are produced.
What does Quantitative data refer to? It refers to numerical measurements made, such as the volumes and times measured.
The Standard Operating Procedure. This is an established procedure or
What is SOP?
method used to carry out a routine activity. It ensures consistent results
every time.
It identifies hazards, evaluates the risks associated with those hazards and
What are risk assessments?
it determines ways to eliminate or control those risks.
When the equipment or substance can cause harm, for example a hot plate
What is a Hazard?
or hydrochloric acid
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5
, 3/22/25, 11:56
AM
The harm that the hazard could cause and the chances of it happening, for
What is a risk?
example the risk of using a hot plate is getting burnt.
What is the independent variable? The variables you alter during an investigation.
What is the Dependent variable? The variables you measure during an investigation.
What is the control variable? The variables you keep constant during an investigation.
A step-by-step set of instructions, Be logically ordered, allows you to
What should a method be?
take sensible measurements, and allows you to test your hypothesis.
When planning your method what do That it will procedure a range of results, reliable results, precise results,
you need to make sure? and accurate results.
The data can be continuous such as the age of plant ir number of plants.
What are some types of data? 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 Continuous data. You need to make sure its a smooth curve of best fit, and
on a bar chart? that the curve goes through or near most of the points.
What are bar charts used for? They are used for discrete data but can be used to compare different sets of data.
The relationship between factors on the graph or in the table. The full
What is the trend on a graph? trend is that the volume increases as the time increases but then levels
off after a certain amount of time.
The number of people sampled in the investigation. To be
What is the sample size?
confident in your conclusions you need a large sample size to
give strong evidence.
This is the data that you have gathered for yourself through the
What is Primary data?
experiments or investigations .
The data that you get in books, scientific papers or the internet. You
What is secondary data?
should compare your primary and secondary data to draw a conclusion
It doesn't fit into the pattern of the other results. It does not lie close to
How do you know if the data is
anomalous? the line of best fit.
What can cause the anomalous data? Not following the method correctly. inaccurate measuring/recording and impurities.
The error that is built into the method or equipment which you are using.
What is systemic error?
This can be corrected by calibrating the balance. These errors are
quantitative.
These are due to not following the method correctly and can be
What is the random error?
minimized by repeating results and taking averages.
What can misreading the They can cause qualitative errors.
observations cause
How close is the data to the true value? Errors due to the equipment
What is the accuracy?
could make the results less.
How trustworthy the data is. It is usually ensured by repeating the
What is the reliability?
readings to identify any anomalous results.
How close the repeat readings are to each other. It can be improved by
What is precision?
using measuring equipment that measure to more decimal places.
What is an enzyme? A protein molecule that acts as a catalyst in a biochemical reaction.
What are proteins made up of? amino acids
How many different amino acids are There are 20 different amino acids.
there?
What are amino acids linked together Peptide Bonds.
2/
5
AM
BTEC APPLIED SCIENCE UNIT 3 EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST
UPDATE
Practice questions for this set
Learn 1/7 Study using Learn
How can you investigate the energy in food or fuel?
Select the correct definition
You can investigate the energy in food or fuel
by burning the food or fuel under a certain You can investigate energy by observing
1
volume of water using a 2the color change of the food or fuel.
calorimeter.
You can calculate energy by counting the
3 4Fuels can carry impurities that are toxic.
number of ingredients in the food or fuel.
Don't know?
Terms in this set (85)
What is a hypothesis? An Idea that you can test using practical experiments
A good Hypothesis must:
What are the Key features of a
Be able to be tested scientifically
good hypothesis?
Relate one dependent variable to on independent variable
States that there is no relationship or causality, for example, no relation
What is a Null Hypothesis?
between the temperature and the rate of reaction.
It refers to the appearance or value of something, such as the colour
What does qualitative data refer to?
observed or whether the bubbles are produced.
What does Quantitative data refer to? It refers to numerical measurements made, such as the volumes and times measured.
The Standard Operating Procedure. This is an established procedure or
What is SOP?
method used to carry out a routine activity. It ensures consistent results
every time.
It identifies hazards, evaluates the risks associated with those hazards and
What are risk assessments?
it determines ways to eliminate or control those risks.
When the equipment or substance can cause harm, for example a hot plate
What is a Hazard?
or hydrochloric acid
1/
5
, 3/22/25, 11:56
AM
The harm that the hazard could cause and the chances of it happening, for
What is a risk?
example the risk of using a hot plate is getting burnt.
What is the independent variable? The variables you alter during an investigation.
What is the Dependent variable? The variables you measure during an investigation.
What is the control variable? The variables you keep constant during an investigation.
A step-by-step set of instructions, Be logically ordered, allows you to
What should a method be?
take sensible measurements, and allows you to test your hypothesis.
When planning your method what do That it will procedure a range of results, reliable results, precise results,
you need to make sure? and accurate results.
The data can be continuous such as the age of plant ir number of plants.
What are some types of data? 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 Continuous data. You need to make sure its a smooth curve of best fit, and
on a bar chart? that the curve goes through or near most of the points.
What are bar charts used for? They are used for discrete data but can be used to compare different sets of data.
The relationship between factors on the graph or in the table. The full
What is the trend on a graph? trend is that the volume increases as the time increases but then levels
off after a certain amount of time.
The number of people sampled in the investigation. To be
What is the sample size?
confident in your conclusions you need a large sample size to
give strong evidence.
This is the data that you have gathered for yourself through the
What is Primary data?
experiments or investigations .
The data that you get in books, scientific papers or the internet. You
What is secondary data?
should compare your primary and secondary data to draw a conclusion
It doesn't fit into the pattern of the other results. It does not lie close to
How do you know if the data is
anomalous? the line of best fit.
What can cause the anomalous data? Not following the method correctly. inaccurate measuring/recording and impurities.
The error that is built into the method or equipment which you are using.
What is systemic error?
This can be corrected by calibrating the balance. These errors are
quantitative.
These are due to not following the method correctly and can be
What is the random error?
minimized by repeating results and taking averages.
What can misreading the They can cause qualitative errors.
observations cause
How close is the data to the true value? Errors due to the equipment
What is the accuracy?
could make the results less.
How trustworthy the data is. It is usually ensured by repeating the
What is the reliability?
readings to identify any anomalous results.
How close the repeat readings are to each other. It can be improved by
What is precision?
using measuring equipment that measure to more decimal places.
What is an enzyme? A protein molecule that acts as a catalyst in a biochemical reaction.
What are proteins made up of? amino acids
How many different amino acids are There are 20 different amino acids.
there?
What are amino acids linked together Peptide Bonds.
2/
5
