Module 6

Question 1

What are the types of errors?

Answer 1

• Random Error
• Systematic Error
• Gross Error / Blunders

Question 2

What is a random error / example?

Answer 2

Random Errors occur by chance. This may be a result of fluctuations in weather or instruments involved.

Question 3

What is a systematic error?

Answer 3

Systematic Errors are caused by instruments that have not be calibrated properly and result in consistently different measurements that vary to their true value.

Question 4

What is a Gross Error / Blunder?

Answer 4

• Caused by the investigator and results in outliers.

Question 5

What does Accuracy refer to?

Answer 5

Accuracy refers to the degree to which the measurement matches the true or expected value.

Question 6

How can Accuracy be improved?

Answer 6

Accuracy is improved when scientists use tools that are calibrated correctly and are trained in the use of the tool.

Question 7

What does Precision refer to?

Answer 7

Precision refers to the ability of the instrument to reproduce the same value each time.

Question 8

How can Precision be improved?

Answer 8

Precision improves with more finely incremented tools that require less estimation.

Question 9

What is Activation Energy?

Answer 9

Activation energy is the minimum energy required to break existing bonds for a reaction to occur.

Question 10

What factors affect reaction rate?

Answer 10

• Temperature
• Concentration
• Surface Area
• Pressure
• Catalyst Chemical

Question 11

What is Boyle’s Law?

Answer 11

Boyle’s Law explores the interaction between the volume and pressure of an ideal gas at a constant temperature.

Question 12

Is Boyle’s Law inversely proportional?

Answer 12

Yes.

Question 13

What is Charles’ Law?

Answer 13

Charles’ Law explores the interaction between the volume and temperature of an ideal gas at a constant pressure.

Question 14

Is Charles’ Law inversely proportional?

Answer 14

No, it is directly proportional.

Question 15

What is X-Ray Diffraction?

Answer 15

X-Ray Diffraction is a technique used to obtain information about proteins by examination of their crystals.

Question 16

List 3 benefits that came out of X-Ray Diffraction?

Answer 16

• DNA finger printing and testing.
• Genetic technologies.
• Understanding genetic diseases and developing cures for these diseases.

Question 17

What is Refraction?

Answer 17

Refraction is the bending of light waves that occurs when it enters a different medium.

Question 18

What does LHC stand for?

Answer 18

Large Hadron Collider

Question 19

What technologies came out of our understanding of the Laws of Reflection & Refraction?

Answer 19

• Microscope

- Telescope

Question 20

What is Rosalind Franklin most known for?

Answer 20

Dr Rosalind Franklin used X-Ray diffraction techniques to study the structure of DNA.

Question 21

What Is Radiotherapy?

Answer 21

Radiotherapy is a process that uses radiation to cure cancer.

Question 22

What does GMO stand for?

Answer 22

Genetically Modified Organisms

Question 23

What did Rosalind Franklin use in order to obtain a photograph of DNA?

Answer 23

X-ray Crystallography.

Question 24

What are the 2 methods to produce GMOs?

Answer 24

• Recombinant DNA Technology

- Reproductive Cloning

Question 25

What is a Genetically Modified Organism (GMO)?

Answer 25

A GMO is any organism whose genetic material has been deliberately manipulated or modified using genetic engineering.

Question 26

What are Newton’s 3 Laws?

Answer 26

1. An object at rest will remain at rest, and an object will remain in motion, unless it is acted on by an external force.
2. The force acting on an object is equal to the mass of that object times its acceleration. F = m x a
3. For every action, there is an equal and opposite reaction.

Question 27

Name 2 types of Anti-Seismic Technologies.

Answer 27

• Base Isolation Systems

- Internal Dampers

Question 28

What are the 3 main types of radiation emitted during Radioisotope?

Answer 28

• Alpha Radiation
• Beta Radiation
• Gamma Radiation