Choose the letter of the correct answer. Write your answer in you notebook.

1. In which of the following subtances does sound travel the slowest ?
A. Air
B. Metal
C. Water
D. Wood

2. How does light travel ?
A. Light travels in a straight line.
B. Light travels in zigzag motion.
C. Light travels in a circular motion.
D. Light rays travel in back and forth motion

3. Which of the following statements is TRUE about sound ?
A. It can travel trough space.
B. It travels in a straight path.
C. It requires a medium to travel.
D. It does not need a medium.

4. The frying pan with oil is heated on electric stove. What kind of heat transfer is shown from the stove to the pan ?
A. Conduction
B. Convection
C. Heat flow
D. Radiation

5. Which of the following is TRUE when you touch a cup of hot water ?
A. Heat travels from your hand to cup.
B. Heat travels from the cup to the water.
C. Heat travels from the cup to your hand.
D. Heat travels from the water to your hand.
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