Unit 9 Science Quiz: General Physics

1. How much heat is required to raise the temperature of 1g of water by 1 ^oC.

1. 1 Calorie

2. 1 Joule

3. 100 Calories

4. 100 Joules

2. What is the speed of sound in air in meters per second (at a pressure of one atmosphere and temperature of 25^oC)?

1. 110

2. 230

3. 490

4. 330

3. The SI unit of electric current is

1. Ampere

2. Farad

3. Ohm

4. Mho 

4. What type of lens is a magnifying glass?

1. Concave

2. Plano-Concave

3. Convex

4. Plane Glass

5. The wire of an electric bulb is known as the

1. Filament

2. Heating Element

3. Luminous Wire

4. Radiator

6. What is the name of the point where light rays from infinity coverge after passing through a lens?

1. Parabola

2. Center

3. Infinity

4. Focus

7. The presence of charge on a substance can be confirmed by a

1. Gold Leaf Electroscope

2. Electrodes

3. Ammeter

4. Thermometer

8. Which of the following is not a good heat insulator?

1. Wood

2. Wool

3. Iron

4. Feathers

9. Which of the following is attracted by a magnet?

1. Iron

2. Glass

3. Leather

4. Sodium

10. When a spring is released, its potential energy is converted to

1. Kinetic Energy

2. Magnetic Energy

3. Electrical Energy

4. Light Energy

11. Conductors have a _______ resistance.

1. High

2. Intermediate

3. Low

4. Unknown

12. A freely suspended magnet always aligns itself along the

1. East West Axis

2. West South Axis

3. East South Axis

4. North South Axis

13. By which of the following methods does heat transfer not take place?

1. Conduction

2. Refraction

3. Convection

4. Radiation

14. Bending of light rays when they enter a different medium is known as

1. Reflection

2. Convection

3. Radiation

4. Refraction

15. What is the name given to the band of seven colors formed by splitting of light by a prism?

1. Color Band

2. Color Arc

3. Spectrum

4. Prism Band

16. Light travels in a

1. Circular Path

2. Straight Line

3. Parabolic Path

4. Hyperbolic Path

17. What does this statement define the rate of change of position in a fixed direction.

1. Speed

2. Acceleration

3. Momentum

4. Velocity

18. Metals expand on heating and contract on cooling.

1. True

2. False

19. A bicycle dynamo generates Direct Current.

1. True

2. False

20. The high pitched cries of a bat are above human hearing.

1. True

2. False

Physics Quiz

A child is sitting in a car (with closed windows) holding onto a string tied to a floating balloon. The car accelerates forward, so the child is pressed back into the seat. What does the balloon do? Does the balloon go forward, backward, or neither?

A steel rod is built from the Earth to the Sun. Suddenly the end near the Earth is pushed forward 1 meter. The other end of the rod therefore must move 1 meter, but isn't this a violation of the principle that no signal can travel faster than the speed of light c? After all, it takes light 500 seconds to travel the Earth-Sun distance. Is this a way to send signals faster than c?

3. Who is responsible for the Principle of Relativity? 

4. A book is standing on end. You throw a super ball at it, and the ball bounces off. You then throw some chewing gum with the same mass as the ball and at the same speed and height; the gum sticks to the book. In which situation is it more likely that the book will tip over: Will the book tip more readily if hit by the ball or by the gum?