Grade 7 : Social Science (Exploring Society) - Geographical Diversity (Set 3) | Concept of Maths

Question 1

If a map uses a scale of $1 : 250,000$, and the distance between two mountain peaks in the Himalayas is measured as 8 cm on the map, what is the actual ground distance?

Accepted Answer

C) 20 km

Answer

A) 2 km

Answer

B) 10 km

Answer

D) 200 km

Question 2

Earth rotates $360^{\circ}$ in 24 hours. If a region $A$ is at $15^{\circ}E$ and region $B$ is at $45^{\circ}E$, what is the time difference between them?

Accepted Answer

B) 2 hours

Answer

A) 1 hour

Answer

C) 3 hours

Answer

D) 4 hours

Question 3

In a mountainous region, the temperature drops by $6.5^{\circ}C$ for every 1,000 m of ascent (Normal Lapse Rate). If the temperature at the base (500 m) is $30^{\circ}C$, what is the temperature at a peak of 2,500 m?

Accepted Answer

A) $17^{\circ}C$

Answer

B) $13^{\circ}C$

Answer

C) $23.5^{\circ}C$

Answer

D) $19.5^{\circ}C$

Question 4

A specific island district has a population of 450,000 and a total land area of $1,500km^2$. Calculate its population density.

Accepted Answer

D) $300	ext{ persons/km}^2$

Answer

A) $30	ext{ persons/km}^2$

Answer

B) $150	ext{ persons/km}^2$

Answer

C) $450	ext{ persons/km}^2$

Question 5

If the Northern Hemisphere represents $x$ fraction of Earth's total surface area, and we know Earth is a sphere divided by the Equator, what is the value of $x$?

Accepted Answer

B) $1/2$

Answer

A) $1/4$

Answer

C) $2/3$

Answer

D) $1/3$

Question 6

A desert receives an average of 20 cm of rainfall annually. If the surrounding semi-arid region receives 250% of this amount, how much rainfall does the semi-arid region get?

Accepted Answer

C) 50 cm

Answer

A) 40 cm

Answer

B) 45 cm

Answer

D) 60 cm

Question 7

On a topographic map, contour lines are drawn at intervals of 50 m. If you cross 6 contour intervals while walking up a hill, what is your total vertical gain in altitude?

Accepted Answer

A) 300 m

Answer

B) 250 m

Answer

C) 350 m

Answer

D) 600 m

Question 8

If the IST (Indian Standard Time) is calculated at $82.5^{\circ}E$ and is $+5:30$ hours ahead of GMT ($0^{\circ}$), how many minutes does Earth take to rotate $1^{\circ}$?

Accepted Answer

B) 4 minutes

Answer

A) 15 minutes

Answer

C) 1 minute

Answer

D) 60 minutes

Question 9

A rectangular forest reserve has dimensions $L = 12km$ and $W = 8km$. If 25% of the forest is dedicated to a wildlife sanctuary, what is the area of the sanctuary?

Accepted Answer

D) $24km^2$

Answer

A) $96km^2$

Answer

B) $48km^2$

Answer

C) $12km^2$

Question 10

The distance between two latitudes is approximately constant at 111 km. How far is a city at $23^{\circ}N$ from the Equator ($0^{\circ}$)?

Accepted Answer

C) 2553 km

Answer

A) 2300 km

Answer

B) 2435 km

Answer

D) 1110 km