Integrated Science

Question 1

1A machine that lifts a 200 N load with a 50 N effort has a mechanical advantage of

Easy

A. 150 B. 4 C. 0.25 D. 250

Question 2

2Pressure is defined as

Easy

A. mass per unit volume B. distance per unit time C. work per unit time D. force per unit area

Question 3

3The upthrust on a body fully immersed in water equals the

Hard

A. weight of water displaced B. volume of the body C. weight of the body D. density of water

Question 4

4Which is a renewable source of energy?

Easy

A. petrol B. coal C. natural gas D. wind

Question 5

5A body's weight on the moon is less than on earth because

Easy

A. its mass changes B. there is no air C. it is colder D. the moon's gravity is weaker

Question 6

6Pressure is greatest when a force acts on

Easy

A. a large area B. a curved area only C. a small area D. no area

Question 7

7A force of 20 N moves a box 5 m in the direction of the force. The work done is

Hard

A. 4 J B. 25 J C. 100 J D. 15 J

Question 8

8A 2 kg mass at 10 m above the ground has potential energy (g = 10 m/s²)

Hard

A. 2000 J B. 20 J C. 100 J D. 200 J

Question 9

9An object floats when its density is

Easy

A. equal to its mass B. greater than that of the liquid C. less than that of the liquid D. zero

Question 10

10A pump raises 500 kg of water through 12 m in 1 minute (g = 10 m/s²). Its power is

Hard

A. 60,000 W B. 6,000 W C. 1,000 W D. 500 W