Q.1: Select & rewrite correct sentence from the given alternatives. 7M
1) The Earth recives heat from the sun by ______
2) conduction of heat takes place through a ______ substance
3) An electron microscope is necessary for the study of_______
4) Garbage is converted into _____________
5 ) In the cell,photosynthesis is carried out with the help of ______
6) Musscles of the heart are_______
7) ________ of heat does noy require a medium
Q2 A) Match the fallowing 4M
cardiac musscles always function in pairs
Are brought about by muscles we never feel tired
pepsin uncontrolled and painful contraction of muscles
cramps chewing movements of jaws
skeletal muscles enzyme of the gastric juice
Q2 B) find odd man out 4M
a) famine, earthquake,cloud burst, railway accident
b) Drought, heavy rain, strom,tsunami
c) lava,hot,mud,ash,locusts
d) wasing away of crops, attact of pests on crop,valcono
Q3) define the fallowing term 6M
a) Tsunami b) famine c) cell
Q4) Answer the following question (any5) 10M
a) What is cell ??
b) Name the different organelles in a cell ?
c) how many types of musclee are there which are those type ?
d) what is voluntary and involuntary musscles?
e) what is a tsunami? what give rise to a tsunami?
f) what is a cloud burst ?
g) what are the modes of heat transfer ?
Q5) Give reason (any3) 9M
a) In winter, why does an iron pillar feel colder than a wooden pole
b) Bread rises during baking ?
c) There is a possibility of food poisoning if we eat state food ?
d) food become acidic in the stomach ?
Q6) Draw , neat and labbelled daigram 4M
a) Human digestive system b) Animal cell
Q7) distinquish between 4M
a) Animal cell & plant cell b) Prokaryotic cell and Eukaryotic cell
Q8) what are the remedial measures ? 4M
a) Famine b)Lightining strike
c) Stroms d) Cloud brust
Q9) True or false? give reason for your answer 4M
a) Heavy rain result in famine
b) Information about a forth coming strom is to be kept secrete
c) You should not swim when there is a lightning in the sky
d) it is possible to prevent th eruption of valcano
Q10) what will obsorb heat ? 4M
a) Steel spoon b) Glass vessel
c) Plastic plate d) wax
