The height of a tree can be measured by

(a)

Metre scale

(b)

plastic ruler

(c)

Metre rod

(d)

measuring tape

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.

The correct relation among the following is 

(a)

Speed = distance × time

(b)

Speed = distance / time

(c)

Speed = time / distance

(d)

Speed = 1 / (distance × time)

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.

Lighter impurities like dust when mixed with rice or pulses can be removed by __________

(a)

filtration

(b)

sedimentation

(c)

decantation

(d)

winnowing

Among the following_________is not a mixture.

(a)

Coffee with milk

(b)

lemon juice

(c)

water

(d)

ice cream embedded with nuts.

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

All animals need

(a)

Food and water only

(b)

Water only

(c)

Air, food and water

(d)

Food only

Which of the following cannot be called as a habitat?

(a)

A desert with camels

(b)

A pond with fish and snails

(c)

Cultivated land with grazing cattle

(d)

A jungle with wild animals

Scurvy is caused due to the deficiency of______________.

(a)

Vitamin A

(b)

Vitamin B

(c)

Vitamin C

(d)

Vitamin D

Calcium is an example for

(a)

carbohydrate

(b)

fat

(c)

Protein

(d)

minerals

Who is the father of computer?

(a)

Martin Luther King

(b)

Graham Bell

(c)

Charlie Chaplin

(d)

Charles Babbage

Who is the computer’s first programmer?

(a)

Lady Wellington

(b)

Augusta ado Lovelace

(c)

Mary Curie

(d)

Mary Comb

The distance between Delhi and Chennai can be measured in _______________.

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Kilometre

A bike moving on a straight road is an example for_________motion.

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  Linear

Grains can be separated from their stalks by ____________.

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Threshing

Chillies are removed from ‘upma’ by ___________ method.

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  hand picking

Earth's surface is covered by ___________% of water.

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  More than 70%

Primary organs of photosynthesis are _____________.

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  leaves

Some living things are made of a single cell, called_______ organism.

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unicellular

Iodine deficiency leads to __________ in adults.

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goitre

Fifth generation computer has ________ intelligence.

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artificial

What is the SI Unit of mass?

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Differentiate between rotational and curvilinear motion.

Why do gases not have fixed shape?

List out the plants present in your school garden

Differentiate between Unicellular and Multicellular organisms.

What are the adaptations seen in different types of vertebrates?

Why should fruits and vegetables not be washed after cutting?

What is a Computer?

Write a short note on Data.

Differentiate hardware and software.

Explain two methods that you can use to measure the length of a curved line.

What is motion? Classify different types of motion with examples.

Complete the map by filling the blanks

Describe the various features which help Camel dwell well in the desert.