Physical Science Tutor Competency Quiz
10 Questions
| Total Attempts: 235
Questions and Answers
- 1.An alternating-current-carrying wire induces a current in another nearby wire. This phenomenon is the basis of operation of which of the following devices?
- A.
Motor
- B.
Generator
- C.
Galvanometer
- D.
Transformer
- 2.The buoyant force exerted by a fluid on an entirely submerged object is equal to _________________.
- A.
The mass of the submerged object
- B.
The gravitational force acting on the submerged object
- C.
The density of the submerged object
- D.
The weight of the fluid displaced by the submerged object
- 3.What is the kinetic energy of a 12-kg toy car moving at a velocity of 3m/s?
- A.
36J
- B.
54J
- C.
108J
- D.
18J
- 4.Compounds that have the same molecular formula but different chemical structures are called _________________.
- A.
Covalent
- B.
Ionic
- C.
Metallic
- D.
Isomers
- 5.___________ states that the volume of a given amount of gas held at constant temperature varies inversely with the applied pressure when the temperature and mass are constant.
- A.
Boyle's Law
- B.
Charles' Law
- C.
Avogadro's Law
- D.
Ideal Gas Law
- 6.A bond in which one or more electrons from one atom are removed and attached to another atom, resulting in positive and negative ions which attract each other, is called a __________.
- A.
Covalent bond
- B.
Ionic bond
- C.
Metallic bond
- D.
Hydrogen bond
- 7.When dissolved in water, bases have all of the following properties except _______________.
- A.
Have a sour taste.
- B.
Change red litmus to blue
- C.
Have a slippery feeling
- D.
Conduct electricity
- 8.The reaction of methane with oxygen has the following unbalanced equation: CH₄(g) + O₂(g) CO₂(g) + H₂O(l). The coefficient for oxygen in the balanced equation is ______.
- A.
1
- B.
2
- C.
3
- D.
5
- 9.What wave propagation principle accounts for the apparent increase in frequency as a train whistle approaches and the apparent decrease in frequency as it moves away?
- A.
Refraction
- B.
Reflection
- C.
Diffraction
- D.
Doppler effect
- 10.Melting ice is an example of increasing ___________.
- A.
Entropy
- B.
Enthalpy
- C.
Heat loss
- D.
Gibbs free energy
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