6.1.2. The Solar System
A subsection of Physics, 0625, through 6. Space physics
Listing 10 of 68 questions
State the name of one planet that has an orbit further away from the Sun than Venus. State the name of one planet that has an orbit closer to the Sun than Venus. Venus has an average radius of orbit of 1.1 × 1011 m and an orbital period of 220 Earth days. Calculate the average orbital speed of Venus. Give your answer in m / s. average orbital speed = m / s State the relationship between the orbital speeds of the planets and their distances from the Sun. Comets are balls of ice and dust. Some comets orbit the Sun. State how the speed of a comet changes as it orbits the Sun. Explain your answer using ideas about the conservation of energy. You may include a labelled diagram in your answer.
0625_w24_qp_42
THEORY
2024
Paper 4, Variant 2
View
Pluto is a dwarf planet. shows the direction of motion of Pluto as it follows its elliptical orbit around the Sun. Pluto Sun direction of motion orbit Y X (not to scale) Point X is the point in the orbit closest to the Sun and point Y is the point furthest away. The orbital speed of Pluto varies as it orbits the Sun. Describe how the speed of Pluto varies as it moves from X to Y and then back to X. Explain, in terms of energy transfers, why the speed of Pluto varies in this way. The average temperature on the surface of Pluto is 43 K. Convert this temperature to a value in degrees Celsius (°C). temperature = °C Pluto has a white surface, as shown in . As Pluto rotates, the white surface alternately faces towards and away from the Sun. white surface Explain how this affects the temperature of Pluto as it rotates on its own axis.
0625_s23_qp_41
THEORY
2023
Paper 4, Variant 1
View
Name the process by which thermal energy is transferred from the Sun to the Earth, through the metal of a cooking pot. A child is sitting on an oscillating swing, as shown in . At the top of the oscillation, the child and swing are momentarily at rest. Use the names of appropriate types of energy to complete the following word equation. Write on the lines in the boxes. The child continues to sit still on the swing. The amplitude of the oscillations slowly decreases. Explain why this happens. energy losses + energy at the bottom of the oscillation + energy at the bottom of the oscillation = gravitational potential energy at the top of the oscillation Use
0625_w06_qp_2
THEORY
2006
Paper 2, Variant 0
View
Questions Discovered
68