Earth and Mercury are two of the rocky planets in our solar system.
State why the gravitational field strength at the surface of Earth is greater than the gravitational field strength at the surface of Mercury.
State the names of the four rocky (inner) planets in our solar system. List the planets in order of increasing distance from the Sun.
A research probe on Venus sends a radio signal to Earth. The distance from Venus to Earth is 4.2 × 1010 m. The speed of the radio signal is 3.0 × 108 m/s.
Calculate the time taken for the radio signal to travel from Venus to Earth.
100 exam-style questions on CIE IGCSE Physics 6.1 The Earth and the Solar System, covering 6.1.1a Rotation of the Earth, the seasons and the Moon, 6.1.1b Average orbital speed, 6.1.2a Contents of the Solar System, 6.1.2b Formation of the Solar System, 6.1.2c Gravitational field strength of a planet, and 6.1.2d Orbits and gravitational attraction. Each one has a worked solution and a mark scheme showing where the marks go.