Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Astrophysics
156 practice questions
Topics covered
Practice questions
21–30 of 156
Question 21
1 mark · Easy
Answer and see the solution →State the unit used to measure the time it takes for a planet to orbit the Sun once.
Question 22
3 marks · Easy
Answer and see the solution →Objects in the solar system have different types of motion.
(a)[1 mark]State what is meant by a 'satellite' in the context of the solar system.
(b)[1 mark]Give one example of a natural satellite found within our solar system.
(c)[1 mark]State whether an asteroid is a satellite or not. Explain your answer.
Question 23
1 mark · Easy
Answer and check →Which list correctly describes structures from smallest to largest?
- A.Moon, planet, star, galaxy
- B.Planet, moon, galaxy, star
- C.Star, moon, planet, galaxy
- D.Galaxy, planet, star, moon
Question 24
4 marks · Normal
Answer and see the solution →The diagram below shows a simplified view of the solar system.
(a)[1 mark]Name the star at the center of our solar system.
(b)[1 mark]Give the number of planets that orbit the Sun in our solar system.
(c)[2 marks]State what the word 'orbit' means in the context of the solar system.
Question 25
1 mark · Normal
Answer and check →Which of the following lists objects in increasing order of size (smallest to largest)?
- A.Moon, Planet, Star, Galaxy
- B.Planet, Moon, Star, Galaxy
- C.Star, Planet, Galaxy, Moon
- D.Galaxy, Star, Planet, Moon
Question 26
4 marks · Normal
Answer and see the solution →The universe contains many structures.
Answer the following questions about these structures.
(a)[2 marks]State what a galaxy is.
(b)[2 marks]Name the galaxy in which our solar system is found.
Question 27
3 marks · Normal
Answer and see the solution →The solar system contains a range of objects with different motions.
(a)[2 marks]State one difference between the motion of a planet and a moon in the solar system.
(b)[1 mark]Name one other type of object (not a planet or moon) found in our solar system.
Question 28
2 marks · Normal
Answer and see the solution →Why is the Sun described as a star and not a planet? Explain your answer.
Question 29
3 marks · Normal
Answer and see the solution →Scientists classify some objects as planets and others as dwarf planets.
Solar System Data Object Orbit Does it clear its orbit? Jupiter Sun Yes Pluto Sun No Earth Sun Yes (a)[2 marks]Using the information in the table, state one reason why Jupiter is classified as a planet but Pluto is not.
(b)[1 mark]What is the main difference between a planet and a dwarf planet?
Question 30
3 marks · Normal
Answer and see the solution →Describe the difference between the terms galaxy, solar system, and universe.