Welcome to your Grade 12 Physics chapter 1
After carefully reading the following 30 questions, choose the correct answer.
1.
Which scientific field provides the bridge between the macroscopic properties of a substance and the individual properties of its constituent molecules and atoms?
2.
What fundamental examining tool is used in physics and chemistry to study the structure of atoms and molecules via interaction with electromagnetic radiation?
3.
According to Newtonian mechanics, under what condition is a body in stable equilibrium under the action of gravity?
4.
What happens to a person when their center of gravity is displaced beyond the position of their feet?
5.
Which physics principle is utilized by soft-bodied animals like earthworms to produce body motion?
6.
During which process do human vocal cords come together and vibrate to produce sound?
7.
Which area of physics explicitly shows which molecules are energetically favorable and the magnitudes of the energies involved in bonding?
8.
What factors determine the stability of a body resting on a base?
9.
The concepts of viscosity and the equation of continuity are essential for understanding which biological process?
10.
What type of wave is sound characterized as in the context of human speech?
11.
How do chemists determine if a particular reaction is energetically possible in the direction it is written?
12.
Which statement is true regarding the relationship between scientific disciplines according to the text?
13.
In stable equilibrium, what cancels the force of gravity and the torque produced by it?
14.
What does spectroscopy study as a function of wavelength or frequency?
15.
Which organ in the human body acts as the sound wave generating organ by setting air molecules into vibrational motion?
16.
Why does a person carrying an unbalanced load stand bending?
17.
What allows chemists to collect information about minute entities like atoms and ions?
18.
Which branch of physics explains how athletes run fast and the speed of animals like the cheetah?
19.
Physics and chemistry overlap specifically when the system involves matter composed of:
20.
What happens when vibrational motion is transferred to adjacent molecules from a source?
21.
How is the stability of a standing person affected by standing on one foot compared to two?
22.
Which concept explains the nature of valency and chemical bonds in molecules?
23.
What enables the formation of controlled sound in the human voice system?
24.
Chemistry is described in the text as being rooted in:
25.
What condition makes a body more stable and difficult to fall?
26.
Which of the following is NOT mentioned as a concept physics explains about the human body?
27.
What type of flow is relevant to understanding circulation in multicellular organisms?
28.
In spectroscopy, the interaction between matter and radiation is studied as a function of which two properties?
29.
What does the physics of heat energy provide to chemistry regarding reaction systems?
30.
Which physics field is essential to explain how limbs are used for different jobs?
