7. From animals with soft bodies……….. a- snails b- shrimp
c- jelly fish
Question four :
Give short account for; 1. Factors affecting the potential energy. 2. Electric conduction of matter. 3. Ways of heat transfer. 4. Adaptation of insectivorous plants .
Question five : What is meant by……… ? 1. Species. 2. Adaptation. 3. Birds migration.
Question six :
Compare between each two of the following: 1. Rodents and lagomorphs. 2. Insects and spiders. 3. Hibernation and aestivation.
Question seven :
Put (√ ) in front of the correct statements and ( X) in front of the wrong ones : 1. Potential energy decreases by the increase of height at which the object reaches. ( ) 2. Melting point is the temperature at which matter changes from a solid phase into a liquid one. ( ) 3. Molecule is the smallest part in a matter that can exist freely and appears in it the matter properties. ( ) 4. Animals can be classified according to the body support. ( )
Question one :
Exercise 3
Complete the following statements: 1. Unit of volume is…………. and that of mass is ………….. 2. An alloy of …………. is used in making jewels while an alloy of …………. is used in making heaters coils. 3. Some solutions are good conductor of heat an electricity as …………. and …………. , while some solutions which do not conduct neither heat nor electricity like………. First Term
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