Test
CCI02.03.03.- Dark matter: The matter we can't see
Preguntas del test (5)
1Which was not one of the four elements the ancient Greeks believed comprised the world?
- AEarth
- BAir
- CSpirit
2When did scientists first measure the motion of groups of moving galaxies?
- A1900's
- B1930's
- C1960's
3The universe's expansion seems to be ________.
- ASlowing down
- BAccelerating
- CChanging directions
4Today's best measurements estimate that about ___% of the universe is dark matter.
- A13
- B27
- C42
5String theories can explain the universe but
- AYou cannot check them out by now
- BThey can explain only the dark matter
- CBoth are correct
Información
- Descripción
- https://youtu.be/HneiEA1B8ks
- Idioma
- English
- Visitas
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