Pertanyaan
7. What happens to particles in a liquid when it boils? A) They get closer together B) They stay the same C) They spread far apart D) They freeze x Evaporation occurs at A) Only at boiling point B) All temperatures C) Only in sunlight D) Only in cold weather 9. Which spoon would be a poor choice for stirring hot soup? A) Metal spoon B) Wooden spoon C) Plastic spoon D) Glass spoon 10. What is an electrical conductor? A) A substance that absorbs electricity B) A substance that allows electricity to flow C) A substance that blocks electricity D) A substance that stores electricity 1. What role does air play in keeping us warm when wearing a woollen j A) Air is a thermal conductor B) Air traps heat C) Air cools the body D) Air has no effect 2. What type of material is used for the handles of electric irons? A) Metal B) Plastic C) Wood D) Rubber 3. What is one example of a thermal conductor? A) Plastic B) Rubber C) Iron D) Wood
Jawaban
7. What happens to particles in a liquid when it boils?
Answer: C) They spread far apart
Explanation: When a liquid boils, the particles gain enough energy to overcome the forces holding them together. They move faster and farther apart, transitioning from a liquid state to a gaseous state.
x Evaporation occurs at
Answer: B) All temperatures
Explanation: Evaporation is a continuous process that occurs at all temperatures. While it happens faster at higher temperatures, even at room temperature, some liquid molecules have enough energy to escape into the air.
9. Which spoon would be a poor choice for stirring hot soup?
Answer: C) Plastic spoon
Explanation: Plastic is a poor conductor of heat. It would melt or deform when exposed to hot soup. Metal, wood, and glass are better choices as they can withstand higher temperatures.
10. What is an electrical conductor?
Answer: B) A substance that allows electricity to flow
Explanation: An electrical conductor is a material that allows electricity to pass through it easily. Examples include metals like copper and silver.
1. What role does air play in keeping us warm when wearing a woollen jacket?
Answer: B) Air traps heat
Explanation: Wool fibers create tiny pockets of air. This trapped air acts as an insulator, preventing heat from escaping our bodies and keeping us warm.
2. What type of material is used for the handles of electric irons?
Answer: D) Rubber
Explanation: Rubber is a good insulator and prevents heat from transferring to the handle, making it safe to hold.
3. What is one example of a thermal conductor?
Answer: C) Iron
Explanation: Iron is a good conductor of heat. It allows heat to transfer through it easily, making it suitable for applications like cooking utensils and radiators.
Pertanyaan Panas
lebih
2. Besar hambatan resistor yang dipasang secara seri yaitu Rs= R1+R2+R3+ldots sedangkan besar hambatan resistor yang dipasang secara paralel yaitu Rp
10. Alat ukur yang sesuai dengan nama besarannya adalah __ neraca mengukur volume gelas ukur mengukur panjang jangka sorong mengukur massa termomet er
Dalam satuan volume , persamaan satuan untuk cm^3 adalah __ a. I dm^3 b. mm C. I m^3 d. dl e. ml
Berikut ini yang merupakan contoh pengamatan kuantitatif dalam suatu percobaan yaitu __ Ifa mengamati dua lampu yang disusun seri. Saat salah satu lam
perangkat yang digunakan untuk membatas arus listrik dan pengaman ketika ada beban lebih , bekerja secara otomatis memutus arus listrik ketika arus ya
19. Massa jenis merupakan hasil bagi antara massa dengan volume benda. Dimensi massa jenis adalah __ A. [M][L] D [M][L]^2 B [M][L]^-2 E [M][L]^-3 C. [
2. Dahulu orang sering menggunakan anggota tubuh sebagai satuan pengukuran seperti di bawah ini, kecuali __ jengkal, depa dan langkah meter, kilogram
) Pads parjing diperoleh dute 50.001 cm jumlah angks penting adalah __ A. I C. t B. or B. 3 D. 7
1. Suatu benda dikatakan bergerak apabila __ A. Berada di tempat yang sama B. Mengalami perubahan posisi terhadap titik acuan C. Bentuknya selalu beru
suatu lampu di aliri listrik selama 20 menit ,bila muatan elektron besarnya 1,6times 10^-19 coulomb ,dan arus yang mengalir itu 4 ampere ,maka jumlah
Suatu percobaan tentang pengaruh suhu terhadap laju reaksi didapatkan data bahwa kenaikan suhu sebesar 20^circ C dapat memperbesar kecepatan reaksi re
suatu lampu di aliri listrik selama 20 menit ,bila muatan elektron besarnya 1,6times 10^-19 coulomb ,dan arus yang mengalir itu 4 ampere ,maka jumlah
3. Sebuah benda yang mula-mula diam mengalami percepatan konstan 4m/s^2 Berapa kecepatan benda tersebut setelah 10 detik?
4. Pilihlah jawaban yang benar dan jelaskan alasannya Sebuah elektron dengan n=3 dan m a. harus memiliki m_(s)=+(1)/(2) b. harus memiliki l=1 c. boleh
Dua muatan q1=-4mu C dan q2=+32mu C berjarak 10 cm seperti gambar . Besar kuat medan listrik di titik P adalah __ 450. 10 (pangkat) 7N/C 0,45.10 (pang