Free Printable Heat 1

Worksheets

Heat 1

Total questions: 10

Worksheet time: 24mins

Name

Class

Date

What is the formula to calculate heat energy required to raise the temperature of any substance?

Q = m Cp ∆T

Q = m Cp

Q = ½ m v

m = Q Cp

What would be the effect on the particles if more heat is supplied to the system?

They would slow down

They would stop moving

They would speed up

There would be no effect

The specific heat is the amount of energy needed to raise the temperature one degree Celsius of 1 gram of a substance.

True

False

Water has a specific heat of 4184 J/KgºC. Wood has a specific heat of 1760 J/KgºC. What material needs more energy to raise the temperature 1ºC

Wood

Water

Both are the same

Apakah yang dimaksudkan dengan ‘suhu’?

What is the meaning of 'temperature’?

Kuantiti haba dalam sesuatu bahan

Quantity of heat in a material

Sukatan haba yang terdapat dalan sesuata bahan

Measurement of heat in a material

Ukuran darjah kepanasan sesuatu bahan

Degree of heat in a material

Tahap kepanasan sesuatu bahan

Hotness level of a material

Rajah di bawah menunjukkan keadaan bola ping pong yang kemik kembali kepada bentuk asalnya selepas dimasukkan ke dalam air panas. Apakah yang menyebabkan bola ping pong itu kembali kepada bentuk asalnya?

Figure below shows the state of the ping-pong ball returning to its original shape after being immersed in hot water. What caused the ping-pong ball to return to its original shape?

Bola pingpong mengembang / The ping-pong ball is expanded

Air masuk ke dalam bola pingpong / The ping-pong ball is filled with water

Udara dalam bola pingpong mengembang / The air in the ping-pong ball expanded

Isipadu bola pingppong semakin bertambah / Volume of the ping-pong ball increased

Rajah menunjukkan satu eksperimen.

Figure shows an experiment.

Apakah kesimpulan yang boleh dibuat berdasarkan pada rajah yang diberi?

What can be concluded based on the diagram above?

Belon menjadi panas

The balloon became hot.

Haba dibebaskan apabila dipanaskan

Heat is released when heated.

Udara mengecut apabila kehilangan haba

Air contracted when heat is lost

Belon mengembang apabila haba dibebaskan

The balloon expanded when released heat.

If the specific heat of water is 4,186 J/kg∙°C, how much heat is required to increase the temperature of 1.2 kg of water from 23 °C to 39 °C?

-80,371.2 J

44,938.6 J

80,371.2 J

112,575.9 K

Calculate the heat absorbed by 105.0 grams of water when it is heated to cook spaghetti. The initial temperature of the water is 20.0°C, and the final temperature of the water is 99.0°C. The specific heat of water is 4.18 J/g•°C.

8778 J/g°C

0.0005 J/g°C

34673 J/g°C

43451.1 J/g°C

10.