Model 6

Question 1

1. What is a computer model?

Answer 1

A computer program which attempts to simulate what might happen in a situation, or what happened in the past

Question 2

2. Technology can be define as:

Answer 2

The application of knowledge to create a device for practical purpose in any area of research, industry or everyday life

Question 3

3. Systemic errors in measurements occur due to:

Answer 3

The fault in the measuring advice

Question 4

4. What does the acronym MSDS stand for?

Answer 4

Material Safety Data Sheet

Question 5

5. Which of the following can be found on a MSDS?

Answer 5

▪︎ The proprieties of the chemical
▪︎ Health Hazard Information
▪︎ Special Protection Information

Question 6

6. The difference between analogue and digital technology is:

Answer 6

How data from the wave carrying the information is recorded

Question 7

7. Which of the following is an example of something that stores data in an analogue way?

a. CD
b. Cassette tape
c. USB
d. Computer hard drive

Answer 7

b. Cassette tape

Question 8

8. Rosalind Franklin was one of the key scientists known for discovering __________?

Answer 8

The use of X-ray crystallography techniques

Question 9

9. In 1953, the double helix structure of DNA was proposed, and later, in 1962 , the Nobel Prize had been awarded to:

Answer 9

d. James Watson, Francis Crick and Maurice Wilkins

Question 10

10. Experiments with cathode rays led to the discovery of the:

Answer 10

d. Atom

Question 11

11. Discovery of radioactivity was an early contribution to the atomic theory development. Which scientist discovered the radioactivity?

Answer 11

Antoine Henri Becquerel

Question 12

12. What did Democritus, Dalton, Thomson, Rutherford, and Bohr all have in common?

Answer 12

They each contributed to the development of the atomic theory

Question 13

13. The Geiger counter is a detector for radioactivity. It was used in Geiger’s early experiments that led to the identification of the alpha particles from the nucleus of the helium atom. The scattering experiment conducted by Geiger was essential in leading to:

Answer 13

Rutherford’s modern atomic theory

Question 14

14. The Larger Hadron Collider (LHC) is the world’s largest and highest-energy__________

Answer 14

Particle accelerator

Question 15

15. In the Standard Model of Particle Physics, the origin of mass is linked to a particle, known as the Higgs boson, that hasn’t yet been detected. Once the celebrations have ended, what will happen if the Higgs boson is detected at the LHC?

Answer 15

Physicists will study in detail how Higgs bosom interacts with other particles

Question 16

16. The discovery of a new type of particle is a major event in physics. Which of the following is the only particle for which a Nobel Prize wasn’t awarded to its discoverer(s)?

Answer 16

Proton

Question 17

17. A telescope that uses two converging lenses is called:

Answer 17

Refracting telescope

Question 18

18. Which of the following light sources is used by a light microscope:

Answer 18

Visible light

Question 19

19. Cobalt-60 radiation therapy machines were used as the initial cancer treatment modality. What nuclear decay results in the usable emission of radiation for this isotope?

Answer 19

Gama decay

Question 20

20. What is a Genetically Modified Organism (GMO)?

 

Answer 20

A genetically modified organism is made of original DNA of the species, plus new DNA the scientists inserted

Question 21

Mod 6 – Question 1
Which of the following is NOT likely to result in a systematic error in a primary investigation?
A. A thermometer consistently reads 107°C when placed in boiling water.
B. An electronic balance records a reading of 0.2 g despite nothing being placed on the scale.
C. A mechanical fault in a data logger used to record pH resulting in all measurements being out by 0.1.
D. A scientist reads the volume of a solution in a measuring cylinder from a different angle each time.

Answer 21

D. A scientist reads the volume of a solution in a measuring cylinder from a different angle each time.

Question 22

Mod 6 – Question 2

Students conducted an investigation to measure the amount of hydrogen gas produced at different temperatures. They set up 4 flasks. Each flask was heated to a different temperature.
The students performed their calculations and recorded them in the table shown.
Flask Temp (°C) Volume gas produced (mL) Time (s) Reaction Rate (mL/s)
1 10 8 180 0.056
2 20 17 180 0.083
3 30 22 180 0.12
4 40 27 180 0.16

For which flask was the reaction rate calculated correctly?
A.	Flask 1
B.	Flask 2
C.	Flask 3
D.	Flask 4

Answer 22

C. Flask 3

Question 23

Mod 6 – Question 4
Galileo built a device that made it possible for him to see the four largest moons of Jupiter. They are not visible to the naked eye because they are faint and appear very close to the much brighter planet.
What is the scientific basis for the device that Galileo built?
A. The law of refraction of light
B. The theory of electromagnetism
C. The principle of dispersion of light
D. The geocentric model of the solar system

Answer 23

A. The law of refraction of light

Question 24

Mod 6 – Question 5
Which of the following conditions would produce a radioactive isotope?
A. Too many atoms in the sample provided
B. Too many protons and neutrons in the atom
C. Too many electrons in the outer shell of the atom
D. Too many electrons for the number of neutrons in the atom

Answer 24

B. Too many protons and neutrons in the atom

Question 25

Mod 6 – Question 6

Which row of the table correctly matches a technology with the scientific understanding that was required for its development?

Technology	         Scientific understanding

a) Telescope Radioactivity
b) Microscope Refraction
c) Nuclear bomb Discovery of DNA
d) Radiotherapy Newton’s Law

Answer 25

Technology Scientific understanding

b) Microscope Refraction

Question 26

Mod 6 – Question 12 (8 marks)
The development of technology has allowed scientists to gather new evidence which 8 can lead or contribute to the further development of new scientific theories, models and laws.
To what extent is this statement accurate? Support your answer with reference to TWO specific technologies.

Answer 26

• X-Ray diffraction: to explore the structure of the DNA molecule to determine the arrangement of atoms within a crystalline molecule. The first clear evidence of a helical structure lead to the rise of modern molecular biology, which is mainly concerned with genetic research and understanding how genes control chemical processes within cells. Our understanding of DNA structure has led to discoveries in the areas of recombinant DNA research, genetic engineering and biotechnologies.
• Large Hadron Collider – an enormous ring-shaped machine that sends beams of charged particles moving in opposite directions at speed, forcing them to eventually collide. The trajectories of these subatomic particles leave tracks that scientists can study, and the collisions have shown the presence of Higgs boson particles. Some scientists believe that this discovery will help them gain insight into concepts such as dark matter and the development of useful new atomic particles.