Test
C4 - PURIFYING AND TESTING WATER
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (7)
1Water from a river is always okay to drink
- AVerdadero
- BFalso
2To turn it into the clean water in taps it is...
- Apassed through a water purification works
- Bcleaned
- Cpurified
- Dbottled
3Some [blank_start]pollutants[blank_end], such as [blank_start]nitrates[blank_end] from [blank_start]fertilisers[blank_end] and [blank_start]pesticides[blank_end] from crop spraying, get into the water before [blank_start]purification[blank_end], and some, such as [blank_start]lead[blank_end] from old water pipes, get in after treatment.
- Apollutants
- Bnitrates
- Cfertilisers
- Dpesticides
- Epurification
- Flead
4There are 3 main stages in water purification:
1- [blank_start]SEDIMENTATION[blank_end] = chemicals are added to make [blank_start]solid particles[blank_end] and bacteria settle out
2- [blank_start]FILTRATION[blank_end] = of very [blank_start]fine particles[blank_end] - a layer of sand on gravel [blank_start]filters out[blank_end] the remaining fine particles; some types of [blank_start]sand filter[blank_end] also remove microbes.
3- [blank_start]CHLORINATION[blank_end] = chlorine is added to [blank_start]kill[blank_end] microbes.- ASEDIMENTATION
- BFILTRATION
- CCHLORINATION
- Dkill
- Esolid particles
- Ffine particles
- Gfilters out
- Hsand filter
5Because these steps cost money , water must be conserved. Tick the 3 that are correct.
- AWater is a renewable source.
- BWater is a renewable source. If there is no rain in the winter, reservoirs can't fill up.
- CIn the UK more homes are being knocked down meaning less water that needs to be made
- DIn the UK more homes are being built so there is a higher demand for water
- EIt takes up energy and time to perform water purification
- FIt takes energy to pump and purify so this means global warming is increased.
6A* STUFF CHOOSE TRUE
- AVerdadero
- BFalso
7Some substances such as nitrates and pesticides have to go through an extra process to remove them why?
- AThey are soluble and are dissolved in the water.
- Bthey are so annoying
- Cthey keep moving so the purification doesn't get rid of them
- Dthe pesticides are too mixed in
Información
- Descripción
- water purification
- Autor
- charlotteeedx
- Idioma
- English
- Visitas
- 31
- Etiquetas
- Valoración
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