Are you a

Spatial Thinker?

173.2 cm

1 m

Find Field

of View

Security

Camera

Description: A man measuring

173.2 cm just enters into the

view of a security camera

having a circular footprint on

the floor. After moving 1 more

metre, the whole frame of the

man comes into the camera’s

view.

Q: Determine the

angle subtended

by the camera

Answer

Q ??

Find the approximate speed of the boat

(rounded off to the nearest integer)Answer

Determine the area of a tank in hectares measuring

1 cm by 1 cm on a 1 : 100,000 scale map

1 cm

1 cm

Answer

200

250

300

350

300

What main feature does the contour lines probably indicate?

a) Volcanic crater b) A conical hill ridging towards the north

c) Sea surface bathymetry d) Valley

Description:

Contours are lines

joining places having

equal elevation.

N

Answer

Somewhere

here

Description: My plane

started at 1.00 p.m IST

from Chennai and landed

on an island in the Indian

Ocean at 8 p.m. local

time. My return journey

took me 4 hours.

Q1: What is the time in the island when it’s 12.00 p.m

in London? (Assuming the plane flew at constant

speed) (8 marks)

Q2: Can you guess the name of the island? (2 marks)Answer

Description: I planned

this route on a topo

map for a leisure

trekking. I know I am

not following the

shortest path.

What am I doing here? (6 marks)

Why am I doing that? (4 marks) Answer

Island 1

Island 2

Equator

Description:

Area of Island 1

==

Area of Island 2

Which of following Is true when the globe is projected on a

Mercator plane?

a) Isle 1 appears larger b) Isle 2 appears larger

c) Both appears in the same size and shape

d) Size is preserved, while shape is distorted Answer

NOT A RUBIK’S CUBEThe outer sides of a plane

cube are painted with six

different colors.

Q: How many faces of the cube have

a) Just two side colored (4)

b) Just one side colored (3)

c) No sides colored (3)Answer

1.732 m

1 m

θ

θ

2θ

Θ = tan -1 (1/1.732)

= tan-1 (1/√3) = 30 deg

2 Θ = 60 degrees

Answer

x y

600

300

600

300

100 m

X+Y = 100 √3; x= 100/ √3

Y = 100 √3 – 100/ √3 = 200/ √3

= 200/1.732 = 115.4

Speed = 115.4/10 = 11.5 m/s

Area on map = 1 cm X 1 cm = 1 cm 2

= 1 X 100000 X 1 X 100000 cm 2 on ground

= 1000 m X 1000 m on ground

= 10 6 sq .m = 10 2 hectares = 100 hectares

Answer

A volcanic Crater

The elevation decreases at the top of

the hill indicating a depression

formed due to a volcanic activity

Answer

The islands are separated by an international

boundary and the International Date Line(180

degree longitude) which is approximately 1 km

from each island.

The Diomede Islands are sometimes called

Tomorrow Island (Big Diomede) and Yesterday Isle

(Little Diomede)

The journey time is just 4 hrs

So time lag between the island and Chennai is (7 – 4 ) = 3 hrs

IST = London time (GMT) + 5 hrs 30 mins

So the local time at island = 5 hrs 30 min + 3 hrs = 8 hrs 30 min

So at 12 p.m GMT, the time at island is 8.30 p.m

The island is the island nation of SINGAPORE

Answer

I am doing CONTOURING, by walking along the contours

Contouring allows you to avoid walk over the top of large hills and

mountains, potentially saving you time and energy.

Answer

B ) I S L E 2 A P P E A R S L A R G E R

Isle 2 appears larger coz, the projection surface is

away from the globe as the place gets away from the

equator. So places at higher latitudes, appear larger

than they are on a cylindrical Mercator projection

Answer

Answers:

a) two side colored : 8

b) Just one side colored : 6

c) No sides colored : 1