Basics of Physics Worksheet-8

Basics of Physics Worksheet-8

1. What will happen if a resistor R is added to the circuit?

(a) It will increase the amount of current in the circuit.

(b) It will reduce the amount of current in the circuit.

(c) It will cause a short circuit.

(d) Nothing

2. What happens when too much current flows through a wire?

(a) A close circuit                          (b) A short circuit

(c) A stop circuit                            (d) A high tension circuit

3. What action is a must to produce sound waves?

(a) Radiation                                 (b) Stretching

(c) Vibration                                  (d) Electrical discharge

4. Temperature of an object is also an indication of _____.

(a) how big the atoms of the object are.

(b) how the atoms of the object are distributed.

(c) its color.

(d) how fast the atoms of the object are moving.

5. What kind of property is shown in the above picture?

(a) Reflection                                  (b) Refraction

(c) Polarization                              (d) Transparent

6. What property of sound waves is used in Sonar?

(a) Absorption                               (b) Speed

(c) Pitch                                          (d) Reflection

7. Which of the following has the largest wavelength?

(a) Gamma Ray                             (b) Infrared

(c) Ultraviolet                                (d) Radio

8. Which energy has electrons in motion?

(a) Chemical     (b) Heat              (c) Electrical     (d) Solar

9. An object moves 100 meters in 5 seconds. What is the velocity of that object?

(a) 100 meter/second                  (b) 20 meter/second

(c) 50 meter/second                    (d) 20 meter/5 second

10. What is the electrical energy?

(a) Movement of photons as a beam.

(b) Movement of charged particles such as electrons.

(c) Movement of atoms in a wire.

(d) Movement of neutral particles such as neutrons.

Answer Key:

(1)–(b); (2)–(b); (3)–(c); (4)–(d); (5)–(b); (6)–(d); (7)–(d); (8)–(c); (9)–(b); (10)–(b)