Exam (elaborations)
Btec Applied Science Unit 3 Questions with correct Answers 2024
- Course
- Institution
Btec Applied Science Unit 3
[Show more]
Content preview
Btec Applied Science Unit 3What is a hypothesis? - answer An Idea that you can test using practical experiments
What are the Key features of a good hypothesis? - answer A good Hypothesis must:
Be able to be tested scientifically
Relate one dependent variable to on independent variable
What is a Null Hypothesis? - answer States 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? - answer It 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? - answer It refers to numerical measurements made, such as the volumes and times measured.
What is SOP? - answer The 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? - answer Titration, Handling of chemicals, disposal of waste, qualitative analytical tests, preparing solutions
What are risk assessments? - answer It identifies hazards, evaluates the risks associated with those hazards and it determines ways to eliminate or control those risks.
What is a Hazard? - answer When the equipment or substance can cause harm, for example a hot plate or hydrochloric acid
What is a risk? - answer The 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? - answer The variables you change during an investigation.
What is the Dependent variable? - answer The variables you are investigating and measure during an investigation. What is the control variable? - answer The variables you keep constant during an investigation.
What should a method be? - answer A 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? - answer That it will procedure a range of results, reliable results, precise results, and accurate results.
What are some types of data? - answer The 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? - answer Continuous 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? - answer They are used for discrete data but can be used to compare different sets of data.
What is the Pattern on the graph? - answer The 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? - answer The 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? - answer The 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? - answer This is the data that you have gathered for yourself through the experiments or investigations .
What is secondary data? - answer The 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? - answer It doesn't fit into the pattern of the other results. It does not lie close to the line of best fit.
What can cause the anomalous data? - answer Not following the method correctly. inaccurate measuring/recording and impurities.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ALVINK2022. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80202 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now