null
US
Entrar
Registre-se gratuitamente
Registre-se
Detectamos que o JavaScript não está habilitado no teu navegador. Habilite o Javascript para o funcionamento correto do nosso site. Por favor, leia os
Termos e Condições
para mais informações.
Próximo
Copiar e Editar
Você deve estar logado para concluir esta ação!
Inscreva-se gratuitamente
511966
P5a - Satellites, Gravity and Circular motion
Descrição
gcse Physics Mapa Mental sobre P5a - Satellites, Gravity and Circular motion, criado por k m em 28-01-2014.
Sem etiquetas
gcse
physics
physics
Mapa Mental por
k m
, atualizado more than 1 year ago
Mais
Menos
Criado por
k m
mais de 10 anos atrás
73
0
0
Resumo de Recurso
P5a - Satellites, Gravity and Circular motion
satellites
an objects that orbits a larger object in space
natural, e.g. the Moon orbits Earth
artificial, e.g. have been put in space by humans
kept in orbit by gravitational force
Gravity: universal force of attraction between masses - keeps planets orbiting the Sun and satellites orbiting the Earth
centripetal force
the force that acts towards the centre of a circle that keeps an object moving in a circle
gravity provides the centripetal force to keep a satellite in orbit
gravitational force between 2 objects gets weaker as they get further apart.
planets further away from the sun experience a lower gravitational force and have a longer orbital period.
different orbits
low polar orbit satellites
used to look at Earth's surface
have to be low enough and orbit over the poles so they can see Earth segment by segment
each orbit = about 100 minutes
uses: imaging Earth's surface; weather forecasting; military uses - spying
geostationary satellites
each orbit = 24 hours
remain in a fixed position above Earth at all times
orbit much higher above Earth
uses: communications; satellite TV; weather forecasting
artificial satellites
can orbit at different heights above Earth's surface
orbital period is longer if the satellite is at a higher position above Earth
comets
orbit the sun in an elliptical loop
when close to the sun, it has to travel fast to escape the gravitational force BUT when far away, it travels slowly as the sun's gravity pulls it back
Anexos de mídia
satellite (image/png)
orbiting_satellite (image/jpg)
centripetalforce (image/jpg)
comet (image/jpg)
Quer criar seus próprios
Mapas Mentais
gratuitos
com a GoConqr?
Saiba mais
.
Semelhante
GCSE AQA Physics - Unit 3
James Jolliffe
GCSE AQA Physics 1 Energy & Efficiency
Lilac Potato
P2 Radioactivity and Stars
dfreeman
Physics 1A - Energy
Zaki Rizvi
Physics: Energy resources and energy transfer
katgads
P2a revision (part 1)
juliasutton
P2a (part 2)
juliasutton
Lenses
Lexie-Heartsit
Renewable Energy Sources
darkangelforgiven
P3 Medical Applications of Physics
dfreeman
AQA Physics P1 Quiz
Bella Statham
Explore a Biblioteca