A 1 kg block of iron requires less thermal energy to raise its temperature by 1 ∘C1\text{ }^\circ\text{C}1 ∘C than 1 kg of water.
Why is this?
Iron is a better conductor of thermal energy than water.
Iron is a poorer conductor of thermal energy than water.
Iron has a higher specific heat capacity than water.
Iron has a lower specific heat capacity than water.
119 exam-style questions on CIE IGCSE Physics 2.2.2a Internal energy and temperature. Each one has a worked solution and a mark scheme showing where the marks go.