multiple choice questions examples

Question 1

What is closest to the estimated age of the Solar System?

Answer 1

c- 4.6 billion years

Question 2

what is currently accepted hypothesis for solar system formation?

Answer 2

b- nebula hypothesis

Question 3

What does “regolith” stand for?

Answer 3

b- the earth’s layer of rock and mineral fragments produced by weathering

Question 4

The key stage in the development of oxygenic photosynthesis was

Answer 4

c . the functional linking of two photosystems in one organism

Question 5

Which element serves both as a key ion in cellular fluids and as a cofactor in biological molecules

Answer 5

d Magnesium

Question 6

The minimum sea-water temperature is about:

Answer 6

d -2 C

Question 7

A current characterised by a balance between the Coriolis ‘force’ and the force exerted by the horizontal pressure gradient is called

Answer 7

d- Geostrophic

Question 8

Cirrus clouds are composed primarily of

Answer 8

c- ice particles

Question 9

The earth’s magnetic field is thought to be generated

Answer 9

e-. in the earth’s liquid metal alloy outer core

Question 10

. Sea water attains its highest density near …..

Answer 10

d -2

Question 11

The “galactic habitable zone” where solar systems that could contain planets on which life might evolve is the:

Answer 11

b- . galactic region that combines sufficiently high metallicity and moderate radiation

Question 12

. The terrestrial hydrosphere holds around 59 106 km3 of water. The fluxes of water out of that reservoir are (1) Evapotranspiration 2.2 Sv, and (2) River drainage 1.3 Sv. The flux of water into the terrestrial hydrosphere consists of Precipitation at 3.5 Sv. Which of the periods listed below is nearest to the residence time of water in the terrestrial hydrosphere that you can calculate from the above information (for your information: 1 hr = 3,600 s; 1 day = 86,400 s; 1 month  2.6 106 s; 1 yr  31.5 106 s)?

Answer 12

d-540 years

Question 13

The Ekman spiral describes….

Answer 13

c- the directional change in transport with depth in a wind-driven surface layer

Question 14

Considering the global carbon budget over very long time scales, weathering of silicate rocks…..:

Answer 14

b- . withdraws CO2 from the atmosphere

Question 15

When rocks are heated, the first formed melt is particularly enriched in which element?:

Answer 15

c Si

Question 16

Upslope fog forms because air …………… as it flows up a hill or mountain slope

Answer 16

c- cools adiabatically

Question 17

Particles that serve as surfaces on which water vapour may condense are called

Answer 17

c- condensation nuclei

Question 18

The late Proterozoic “snowball Earth” glaciations were likely due to:

Answer 18

c- . CO2 draw down due to increased weathering on continental rifting

Question 19

Earth Observation sensors on polar-orbiting satellites have space-time sampling capabilities suitable for monitoring global climate change because:

Answer 19

c- c. they remain over the equator at the same longitude and continuously monitor the same region