MCQOPTIONS
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MCQOPTIONS
This section includes 219 Mcqs, each offering curated multiple-choice questions to sharpen your Grade8 knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Another name for Earthquakes is |
| A. | nektons |
| B. | temblors |
| C. | blusters |
| D. | flickers |
| Answer» C. blusters | |
| 2. |
Tremendous damage along with huge destruction of buildings can take place at a scale of |
| A. | 5 |
| B. | 6 |
| C. | 7 |
| D. | 10-Aug |
| Answer» E. | |
| 3. |
Instrument used to measure the earthquake is known as |
| A. | quake meter |
| B. | quake graph |
| C. | seismograph |
| D. | typanicgraph |
| Answer» D. typanicgraph | |
| 4. |
Tremors that have occurred in Earth's crust are known as |
| A. | Earthquakes |
| B. | Volcanic eruptions |
| C. | Bed eruptions |
| D. | Volcano-Earth Quake |
| Answer» B. Volcanic eruptions | |
| 5. |
Earthquakes occur when there is a sudden release of stored up energy in the Earth's |
| A. | inner core |
| B. | outer core |
| C. | upper mantle |
| D. | lower crust |
| Answer» D. lower crust | |
| 6. |
Reverse fault is similar to |
| A. | overfolding |
| B. | normal fault |
| C. | tear fault |
| D. | recumbent folding |
| Answer» C. tear fault | |
| 7. |
The amount of force exerted on rock layers influences the way they |
| A. | vibrate |
| B. | collide |
| C. | bend |
| D. | su+M311bduct |
| Answer» D. su+M311bduct | |
| 8. |
The Himalayas are considered to be |
| A. | very young |
| B. | very old |
| C. | middle aged |
| D. | the oldest |
| Answer» B. very old | |
| 9. |
A block mountain with a flat top is called a |
| A. | limb |
| B. | slant |
| C. | thrust |
| D. | horst |
| Answer» E. | |
| 10. |
A mountain that is formed by the large-scale displacement of rocks caused by either compressional or tensional forces is known as |
| A. | fold mountain |
| B. | fault mountain |
| C. | block mountain |
| D. | rocky mountain |
| Answer» D. rocky mountain | |
| 11. |
Magma is generally made up of |
| A. | molten metals |
| B. | molten sand |
| C. | molten rocks |
| D. | boiling water |
| Answer» D. boiling water | |
| 12. |
The Oceanic Plates form the |
| A. | countries |
| B. | sea beds |
| C. | continents |
| D. | islands |
| Answer» C. continents | |
| 13. |
The Continental Plates are |
| A. | thinner than Oceanic Plates |
| B. | thicker than Oceanic Plates |
| C. | equal in thickness to Oceanic Plates |
| D. | |
| Answer» C. equal in thickness to Oceanic Plates | |
| 14. |
When the heated Magma flow onto the Earth's surface through fracture, cracks and volcanoes, it is known as |
| A. | molten mantle |
| B. | lava |
| C. | mantle |
| D. | core magma |
| Answer» C. mantle | |
| 15. |
At the boundaries where the magma rises to the surfaces, ridges are formed on the |
| A. | ocean beds |
| B. | land |
| C. | rocks |
| D. | settled sand |
| Answer» B. land | |
| 16. |
During eruption, the volcanic material is |
| A. | blown to some meters |
| B. | blown to many kilometers |
| C. | blown to some inches |
| D. | blown to some feet |
| Answer» C. blown to some inches | |
| 17. |
An example of composite volcanoes is |
| A. | Mount Everest |
| B. | Puy de Dome |
| C. | Mauna Loa |
| D. | Mount Merapi |
| Answer» E. | |
| 18. |
The magma which is forced onto the Earth's surface is known as |
| A. | Vent |
| B. | Cone |
| C. | Lava |
| D. | Magma Chamber |
| Answer» D. Magma Chamber | |
| 19. |
In some eruptions, mudflows are forced over the |
| A. | Earth's mantle |
| B. | Ocean bed |
| C. | Earth's surface |
| D. | Earth's core |
| Answer» D. Earth's core | |
| 20. |
When a volcano ejects acid lava, the eruption is usually |
| A. | light and less violent |
| B. | soft and less violent |
| C. | loud but less violent |
| D. | loud and more violent |
| Answer» E. | |
| 21. |
Folding also takes place on a large scale when two |
| A. | oceanic plates collide |
| B. | one continental and one oceanic plate collide |
| C. | one pacific and one arctic plate collide |
| D. | continental plates collide |
| Answer» E. | |
| 22. |
Further uneven compression of plates would cause one limb to be pushed over the other to create a/an |
| A. | underfold |
| B. | afold |
| C. | overfold |
| D. | prefold |
| Answer» D. prefold | |
| 23. |
A rift valley forms when the central block is moved |
| A. | upwards |
| B. | downwards |
| C. | into the side blocks |
| D. | away from the side blocks |
| Answer» C. into the side blocks | |
| 24. |
Faulting occurs when Crustal rock layer experience |
| A. | tensional force |
| B. | magnetic force |
| C. | contact force |
| D. | frictional force |
| Answer» B. magnetic force | |
| 25. |
Faulting occurs due to |
| A. | one force only |
| B. | two forces |
| C. | three forces |
| D. | four forces |
| Answer» C. three forces | |
| 26. |
The plates and the upper part of the mantle combine to form a layer known as |
| A. | atmosphere |
| B. | troposphere |
| C. | exosphere |
| D. | lithosphere |
| Answer» E. | |
| 27. |
The word 'Tectonics' comes from a Greek word |
| A. | tekton |
| B. | tecutan |
| C. | tecuashian |
| D. | tectiron |
| Answer» B. tecutan | |
| 28. |
The mantle is made up of |
| A. | molten metals |
| B. | magma |
| C. | light rocks |
| D. | heavy rocks |
| Answer» C. light rocks | |
| 29. |
When plates move towards each other, they collide, this movement is known as |
| A. | Convergent Plate Movement |
| B. | Divergent Plate Movement |
| C. | Transform Plate Movement |
| D. | Boundary Plate Movement |
| Answer» B. Divergent Plate Movement | |
| 30. |
The average temperature of mantle is |
| A. | 1200°C |
| B. | 1500°C |
| C. | 2000°C |
| D. | 2400°C |
| Answer» B. 1500°C | |
| 31. |
The mantle is the layer of Earth that lies |
| A. | over the crust |
| B. | under the core |
| C. | between the core and the crust |
| D. | in the core |
| Answer» D. in the core | |
| 32. |
The movement of Magma due to the convection current move the |
| A. | plates |
| B. | crust |
| C. | mantle |
| D. | core |
| Answer» B. crust | |
| 33. |
When Nazca and the South American Plate collide, the Nazca plate is |
| A. | abducted |
| B. | subducted |
| C. | deducted |
| D. | preducted |
| Answer» C. deducted | |
| 34. |
The Oceanic Plates rest |
| A. | higher in the mantle |
| B. | lower in the mantle |
| C. | higher in the core |
| D. | lower in the crust |
| Answer» C. higher in the core | |
| 35. |
The relative density of the elements in the Continental Plates is |
| A. | less than 3 |
| B. | equal to 10 |
| C. | more than 5 |
| D. | equal to 3 |
| Answer» B. equal to 10 | |
| 36. |
Iceland was formed when the North American and Eurasian plates |
| A. | converged |
| B. | diverged |
| C. | merged |
| D. | folded |
| Answer» C. merged | |
| 37. |
The greater the amount of silica, the higher the |
| A. | volatility |
| B. | viscosity |
| C. | density |
| D. | conductivity |
| Answer» C. density | |
| 38. |
An example of acid lava volcano is Mount |
| A. | Everest |
| B. | Fuji |
| C. | Elbrus |
| D. | Mayon |
| Answer» E. | |
| 39. |
As the lava reaches the sea water, it |
| A. | softens |
| B. | spreads |
| C. | liquefies |
| D. | hardens |
| Answer» E. | |
| 40. |
The fluidity of lava is determined by the amount of |
| A. | copper |
| B. | iron |
| C. | nickel |
| D. | silica |
| Answer» E. | |
| 41. |
The reference to how thick a liquid is known as |
| A. | density |
| B. | conductivity |
| C. | viscosity |
| D. | volatility |
| Answer» D. volatility | |
| 42. |
Overtime, the underwater volcano increases in height to come out of the ocean surface to form a/an |
| A. | ridge |
| B. | cliff |
| C. | island |
| D. | ice berg |
| Answer» D. ice berg | |
| 43. |
If pressure is more than normal, the lava in the sea forms a |
| A. | huge rock |
| B. | ridge |
| C. | cluster of stones |
| D. | habitat for aquatic life |
| Answer» C. cluster of stones | |
| 44. |
These mid-oceanic ridges stretch for more than |
| A. | 65,000 km |
| B. | 100,000 km |
| C. | 200,000 km |
| D. | 145,000 km |
| Answer» B. 100,000 km | |
| 45. |
Many of these mid-oceanic ridges have formed as a result of |
| A. | Volcanism at Destructive plate boundary |
| B. | Volcanism at hotspot |
| C. | Earthquake Volcanism |
| D. | Underwater volcanism |
| Answer» E. | |
| 46. |
At the same subduction zone, magma may erupt onto the Earth's surface as |
| A. | rocks |
| B. | stones |
| C. | lava |
| D. | ocean bed |
| Answer» D. ocean bed | |
| 47. |
The passageway which joins the vent to the crater of the volcano is known as |
| A. | Vent |
| B. | Cone |
| C. | Pipe |
| D. | Crater |
| Answer» D. Crater | |
| 48. |
Volcanoes that have erupted in historic times and are still likely to erupt, are known as |
| A. | Active volcanoes |
| B. | Dormant volcanoes |
| C. | Extinct volcanoes |
| D. | Instinct volcanoes |
| Answer» C. Extinct volcanoes | |
| 49. |
An example of a shield volcano is |
| A. | Mount Fuji |
| B. | Mount Pinatubo |
| C. | Puy de Dome |
| D. | Mauna Loa |
| Answer» E. | |
| 50. |
Basic lava erupts out of the volcano, throwing out mainly |
| A. | ash |
| B. | dust |
| C. | CO |
| D. | CO2 |
| Answer» B. dust | |