Question

1. Choose the correct option.
(a) The radius of the Earth is
(1) 6400 km (ii) 5800 km
(a
(iii) 4800 km
(iv) 3800 km
(l
(b) Scientists who study the Earth are known as
(i) cartographers (ii) engineers
(iii) geologist
(iv) gemologist
(c) Which instrument is used to record the seismic waves generated by earthquakes?
(i) Thermometer (ii) Computer
(iii) Seismographs (iv) None of the above
(d) Which of these is not an igneous rock?
(i) Basalt
(ii) Obsidian
(iii) Granite
Limestone
(e) Which of these is not a sedimentary rock?
(i) Sandstone
(ii) Limestone
cm
(iii) Conglomerate
(w) Granite​

Answer 1

I. I think number one option is mistake because its 6371 km but there is in no option

II. geologist

III. seismographs

IV. limestone

V. Granite