The height of a tree can be measured by

(a)

Metre scale

(b)

plastic ruler

(c)

Metre rod

(d)

measuring tape

Choose the correct one

(a)

km > mm > cm > m

(b)

km > mm > m > cm

(c)

km > m > cm > mm

(d)

km > cm > m > mm

While measuring the length of an object using a ruler, the position of your eye should be

(a)

Left side of the point.

(b)

Vertically above the point where the measurement is to be taken.

(c)

Right side of the point

(d)

Any where according to one’s convenience.

Unit of speed is__________

(a)

m

(b)

s

(c)

kg

(d)

m/s

Which among the following is an oscillatory motion?

(a)

Rotation of the earth about its axis

(b)

Revolution of the moon about the earth

(c)

To and fro movement of a vibrating string

(d)

All of these.

Gita rides with her father’s bike to her uncle’s house which is 40 km away from her home. She takes 40 minutes to reach there.
Statement 1: She travels at a speed of 1 km/minute.
Statement 2: She travels at a speed of 1 km/hour.

(a)

Statement 1 alone is correct.

(b)

Statement 2 alone is correct.

(c)

Both statements are correct.

(d)

Neither statement 1 nor statement 2 is correct.

______ is not made of matter

(a)

gold ring

(b)

iron nail

(c)

light ray

(d)

oil drop

_________is essential to perform winnowing activity.

(a)

Rain

(b)

Soil

(c)

Water

(d)

Air

Pond is an example of ________ecosystem.

(a)

Marine Habitat

(b)

Freshwater Habitat

(c)

Deserts

(d)

Mountain

The important function of stomata is __________.

(a)

Conduction

(b)

Transpiration

(c)

Photosynthesis

(d)

Absorption

1 Metre, 1 centimetre, 1 kilometre, and 1 millimetre.

Given below is the distance-travelled by an elephant across a forest with uniform speed. Complete the data of the table given below with the idea of uniform speed.

Distance (m)	0	4		12		20
Time (s)	0	2	4		8	10

Complete the web chart.

Differentiate between rotational and curvilinear motion.

Give the main difference between a pure substance and an impure substance.

Leaf – Stem – Root – Flower

Transpiration - Conduction - Absorption - Fixation.

Sugar : Beam balance :: Lime juice :___?

Height of a person : cm :: Length of your sharpened pencil lead :___?

Milk : Volume :: Vegetables :___?

Kicking a ball : Contact force :: Falling of leaf : _____?

Distance : metre :: Speed : _______?

Circulatory motion : A spinning top :: Oscillatory motion : ______?

Solid : Rigidity :: Gas : ______

Large Inter-particle space : Gas ::_______: solid.

Solid : Definite shape ::______ :Shape of the vessel.

Iron – sulphur mixture : ______::Mustard seeds from Urad-dhal : Rolling