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Class 4 Science Chapter 5 Test 2

Welcome to your Class 4 Science Chapter 5 Test 2

1. 
To hear a clear echo, the reflecting surface should be at least _______meters away from the source of sound.

2. 
Heat is a form of ________.

3. 
The symbol of Fahrenheit scale is _______

4. 
Sound needs some _________ to travel.

5. 
Sound cannot travel in________.

6. 
Doctors usually measure temperature in _______ scale.

7. 
When the object is cold, its temperature _______

8. 
In thermometer, ______ present in its bulb.

9. 
When sound bounces back from an object (reflects) at a certain distance and we hear it again, it is called ____.

10. 
To describe the condition of weather, _______ is used.

11. 
The symbol of degree centigrade is _______

12. 
The _________ present in our throat produce sound.

13. 
The instrument used to measure temperature is called ______.