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WorksheetsEvaluation Test (Grade-7)
Total questions: 22
Worksheet time: 33mins
What is an example of a third-class lever?
broom
screwdriver
screw
wheelbarrow
What kind of simple machine is a wheelchair ramp?
pulley
wheel and axle
inclined planes
wedge
What is a simple machine?
a device that has only one working motor
device that is made up of two or more machine
a device that makes work easier
a device that makes more work for a job
What type of charge does a proton have?
postive
no charge/neutral
negative
all of above
What two sub-atomic particles belong in the nucleus of an atom?
electrons and neutrons
electrons and protons
protons and neutrons
The mass number of an atom is calculated as
protons + neutrons
protons - neutrons
electrons - neutrons
neutrons + electrons
What is chemical name of baking soda?
(a)
Name the chemical gas that has formula CH4.
(a)
Select which of below are correct saying.
All Matters have mass.
All Matters have fixed volume.
All matters have fixed mass but not fixed volume.
All matters occupy space.
Which of below is not a simple machine?
Screw driver
winding roads
A string roller
Bicycle
An element can be split into further smaller part.
True
False
The symbol of Boron is B.
True
False
A steel cutting scissors has longer handles and shorter blade edge.
True
False
The combining capacity of one atom to another while chemical combination is called compound.
True
False
The symbol for Magnesium element is (a)
The formula to show principle of lever is (a)
What do you mean by lever? Mention its types with one example of each.
What do you mean by screw? Why wedge is also called double inclined plane?
Simple machines makes our work efficient, justify with suitable reason.
Define compound. Why carbondioxide is called a compound?
Why an atom is electrically neutral? How many neutrons are there in hydrogen atom.
Write any two difference between physical and chemical change.
