Motion In The Universe
Muhtasari
Look up on a clear night and you are staring into the same universe that ancient sailors used to navigate and that modern telescopes are still mapping. From our nearest neighbour, the Moon, to galaxies billions of light-years away, the universe is organised into a hierarchy of structures held together by gravity.
In this lesson you will learn how planets, moons, comets and asteroids move through the solar system, why some orbits are circular and others are stretched, and how to calculate the speed of any orbiting body. These ideas appear regularly on Edexcel Papers 1 and 2, often as calculation or comparison questions.
Malengo
- Know that the universe is a large collection of billions of galaxies, a galaxy is a large collection of billions of stars, and our solar system is in the Milky Way galaxy
- Understand why gravitational field strength, g, varies and know that it is different on other planets and the Moon from that on the Earth
- Explain that gravitational force causes moons to orbit planets, planets to orbit the Sun, artificial satellites to orbit the Earth, and comets to orbit the Sun
- Describe the differences in the orbits of comets, moons and planets
- Use the relationship between orbital speed, orbital radius and time period: orbital speed = 2 x pi x orbital radius / time period
Maelezo ya Somo
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Motion In The Universe. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- Which of the following correctly describes the structure of the universe? A) Stars contain galaxies which contain solar systems B) The universe contains galaxies which contain solar systems C) Solar systems contain galaxies which contain stars D) Galaxies contain universes which contain stars Answer: B
- What happens to the orbital speed of a planet as its distance from the Sun increases? A) It increases B) It stays the same C) It decreases D) It doubles Answer: C
- Which type of orbit do comets follow around the Sun? A) Circular B) Slightly elliptical C) Highly elliptical D) Parabolic Answer: C
- The gravitational field strength on the Moon is about 1.6 N/kg. What is the weight of a 50 kg object on the Moon? A) 50 N B) 80 N C) 500 N D) 31.25 N Answer: B
- What provides the centripetal force that keeps a planet in orbit around the Sun? A) The planet's own rotation B) Friction with space dust C) Gravitational attraction between the planet and the Sun D) Magnetic force from the Sun Answer: C
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Motion In The Universe? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
