HEAT and TEMPERATURE (DLP)

HEAT and TEMPERATURE (DLP)

HABA dan SUHU

Meaning of HEAT and TEMPERATURE

Maksud HABA dan SUHU

• Heat is a form of energy transferred due to the difference in temperature. Haba ialah suatu bentuk tenaga yang dipindahkan disebabkan oleh perbezaan suhu.

• Temperature is the degree of hotness or coldness of a material. Suhu ialah darjah kepanasan atau kesejukkan sesuatu bahan.

Multiple Select

These are laboratory thermometers. Choose two correct statements.

Ini ialah termometer makmal. Pilih dua pernyataan yang betul.

• The liquid level in the tube increases when the thermometer is put in hot water.

  Paras cecair dalam tiub meningkat apabila termometer diletak dalam air panas.

• The liquid level in the tube increases when temperature decreases.

  Paras cecair dalam tiub meningkat apabila suhu menurun.

• The liquid in the tube expands or contract when expose to different surrounding temperature.

  Cecair di dalam tiub mengembang atau mengecut apabila terdedah kepada suhu persekitaran yang berbeza.

Measuring using a thermometer

Mengukur menggunakan termometer

The correct technique to read from a thermometer is as shown in Diagram C.

Teknik yang betul untuk membaca termometer ditunjukkan dalam Rajah C.

Multiple Select

Choose two correct statements.

Pilih dua pernyataan yang betul.

• Ensure the bulb of the thermometer does not touch the bottom surface of the container when measuring liquid temperature.

  Pastikan bebuli termometer tidak menyentuh permukaan dasar bikar apabila mengukur suhu cecair.

• Eyes position must be parallel with the meniscus of the thermometer.

  Kedudukan mata mesti selari dengan meniskus termometer.

• Stir the liquid being measured using the thermometer.

  Kacau cecair yang diukur menggunakan termometer.

Multiple Choice

Temperature C is ____⁰C.

• 32

• 37

• 40

Multiple Choice

Temperature D is ____⁰C.

• 22

• 25

• 20

The temperature of water changes according to the temperature of its surrounding.

• Boiling point Takat didih

• Freezing point Takat beku

Fill in the Blanks

Fill in the Blanks

Expansion and Contraction of Materials

Pengembangan dan Pengecutan Bahan

• Materials expands when heated and contract when cooled. Bahan mengembang apabila dipanaskan dan mengecut apabila disejukkan.

• Materials expands when gaining heat and contract when losing heat. Bahan mengembang apabila menerima haba dan mengecut apabila kehilangan haba.

Multiple Choice

In the experiment of an 'iron ball and a ring', the iron ball can pass through the ring before heated. After heated, it cannot pass through the ring. Then, after being cooled, it can pass through the ring again.

• solid expands when heated

  pepejal mengembang apabila dipanaskan

• the iron ball losing heat when heated

  bebola besi kehilangan haba apabila dipanaskan

• the iron ring expands when the iron ball is heated

  gegelang besi mengembang apabila bebola besi dipanaskan

Multiple Choice

From the picture, we can see that the level of coloured water in the tube increases. The correct inference is ...

Daripada gambar, dapat diperhatikan bahawa paras air berwarna dalam tiub meningkat. Inferens yang betul ialah ...

• the coloured water is losing heat

  air berwarna kehilangan haba

• the coloured water contracts

  air berwarna mengecut

• the coloured water is gaining heat

  air berwarna menerima haba

Multiple Select

An empty plastic bottle with a balloon replacing the cap is put in hot water as shown in the diagram.

Sebiji botol plastik yang kosong dengan belon sebagai penutupnya diletakkan ke dalam air panas seperti yang ditunjukkan dalam rajah.

Choose two correct statements.

Pilih dua pernyataan yang betul.

• Air in the bottle expands

  Udara dalam botol mengembang

• The bottle expands

  Botol itu mengembang

• The bottle gains heat

  Botol itu menerima haba

• Air in the bottle gains heat

  Udara dalam botol menerima haba

Open Ended

What can you do to separate the glasses?

Apakah yang dapat anda lakukan untuk memisahkan kedua-dua gelas?

Type your answer.

Taipkan jawapan anda.

Thank you for your answers.