# أوراق عمل Review chapter 1 مع الحل العلوم منهج انجليزي الصف الثامن

عرض بكامل الشاشة

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أوراق عمل Review chapter 1 مع الحل العلوم منهج انجليزي الصف الثامن

United Arab Emirates

Ministry Of Education

Term 1 Final Revision

Chapter 1 Final Questions

. The Celsius temperature at absolute zero is equal to

A-100 DC

B. 100 OC

C- 273 CC

2. In general, when a solid is heated, it

A. expands with increasing

B- contracts with increasing

C- expands with decreasing

D- contracts with decreasing terrFature

. Which of the following statement(s) is / are true

A. Every substance contains heat

B. For heat to flow between two substances, they must at different

C. The intemal energy of a substance is equal to the kinetic energy of the molecules in the substance

I and II only

II and Ill only

4. A value of 25C is a measurement of

A- density

B- distance

C- mass

Potential energy is sometimes called_…… energy

A. Stored

B- moving

C- still

6. Heat transfer in a swimming pool is

A. Conduction

B. Convection

D. expansion

7. what can travel through a vacuum

A- Sound

B. Light

. Which of the following is a measure of the average kinetic energy of the particles in a sample Of matter

A. chemical kinetics

B. thermochemistry

C. reaction rate

D. temperature

9. Why do hot air balloons rise

A. Thermal contraction

B. Thermal conduction

D. thermal expansion

10 .A heating appliance

A.  Converts heat energy into electrical energy

B. Converts electrical energy into heat energy

C- Converts electrical energy into mechanical energy

D- Converts mechanical energy into electrical energy

11. A thermostat is used for

A- Produce heat

B- Conduct heat

C. Regulate

D- Relocate temperature

. A bimetallic coil is made from how many types of coils

13. Heat transfer through space is

A- Conduction

B- Convection

D- expansion

14. Cool air flows

A- Upwards

B. PownwardS

C- Sideways

. What turns thermal energy into mechanical energy

A- Refrigerator

B- Heater

C. Åeat engin

D- Air conditioning

.Approximately how much of an automobile engine is converted to wasted energy

17. Thermal energy is the sum of

A- Kinetic energy and gravitational energy

B. Kinetic energy and potential energy

C- Kinetic energy and light energy

D- Kinetic energy and electrical energy

18. Which is the highest temperature

.A balloon is placed in a cold room. What process takes place inside the balloon

A. Thermal contraction

B. Thermal conduction

D. Thermal expansion

Heat transfer between 2 solids touching each other is

A. Conduction

B. Convection