Professional English for Physical Science | Unit 1 Task Answers Softskills UG 1st Year | 1st Semester | communication

 Professional English for Physical Science Task Answers

                   Unit-1 Communication 

                              Listening 

Pre-Task:

       Raman effect - Diffraction

       Scattering - Iridescent substances

       Crystal structure - Crystal dynamics

       Substances - Raman scanner

       Molecules - Ultrasonic

       Optics-Spectroscopy

       Acoustics - Vibrations

       Optics of colloids- Physiology of human vision

       Electrical and magnetic anisotropy-Hypersonic frequency

       Radiation effect - Infra-red

SOURCE PASSAGE 1: The Indian Scientist who found why the sea is blue?

TASK 1:Listen to the audio and answer the given questions

Classify the following terms

Device:

              Acoustics

              Optics of Colloids

Process:

             Scattering

             Prism

Concept:

            Raman effect

            Crystal structure

            Diffraction

TASK 2: Listen and give specific information on the terms given:

1: Spectroscopy - The branch of science devoted to discovering the chemical composition of materials by looking at the light (and other kinds of electromagnetic radiation)

2: Raman effect - It involves scattering of light by molecules of gases, liquids, or solids.

3. Raman scanner - The technique used to determine the chemical composition of materials in containers and behind a range of other barriers including skin.

4. Diffraction - The spreading of waves around obstacles.

5. Ultrasonic-is sound waves that have a higher frequency than the human ear can hear.

6. Hypersonic frequency - pertaining to speeds equal to, or in excess of, five times the speed of sound.

7. Infra-red - situated outside the visible spectrum at its red end.

8. Crystal dynamics - concerned with the vibrational movement of atoms in the solid state.

9. Iridescent substances - a lustrous rainbowlike play of color caused by differential refraction of light waves.

10. Diffraction- the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced

Task 3: Match the following:

✓Crystal Dynamics - the vibrational movement of atoms in the solid state.

✓Hypersonic-Speed of more than 5 Mach.

✔Ultrasonic - a frequency above the human ear's audibility limit.

✓ Optics - studies the behaviour and properties of light.

✓ Acoustics - concerned with the properties of sound.

Task 4:Fill in the blanks with suitable words from the choices given in the bracket:

     (Prism, Matter, Radiation, Light, Interaction)

Spectroscopy is the study of the Interaction between Matter and electromagnetic Radiation via electron spectroscopy, atomic spectroscopy. Historically, spectroscopy originated through the study of visible Light dispersed according to its wavelength, by a Prism.

Professional English for Physical Science | Unit 1 Task Answers Softskills UG 1st Year | 1st Semester | communication 

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