Physics · Quick practice · answer shown after each question
Question 1 of 10
Water boils at a lower temperature on a high mountain.
Question 2 of 10
How much heat is needed to raise 0.2 kg of a substance with c = 900 J kg⁻¹ K⁻¹ by 20 K?
Question 3 of 10
Increasing the pressure on water
Question 4 of 10
How much heat is needed to raise 0.5 kg of a substance with c = 400 J kg⁻¹ K⁻¹ by 25 K?
Question 5 of 10
How much heat is needed to raise 0.5 kg of a substance with c = 4,200 J kg⁻¹ K⁻¹ by 10 K?
Question 6 of 10
Impurities raise the melting point of ice.
Question 7 of 10
The heat needed to warm 3 kg of water by 5 K (c = 4,200 J kg⁻¹ K⁻¹) is ___ J.
Question 8 of 10
Evaporation differs from boiling in that evaporation
Question 9 of 10
Sweating cools the body by evaporation.
Question 10 of 10
How much heat is needed to melt 0.2 kg of ice at 0 °C? (L = 3.36 × 10⁵ J/kg)
Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.