Worksheetsdiagnostic test for biology grade 9
Total questions: 20
Worksheet time: 13mins
How many chambers does the human heart have?
3
4
2
1
what is the chemical composition for carbon dioxide?
6CO2
C6H12O6
6O2
6H2O
It is a chemical reaction between carbon dioxide and water.
cellular respiration
photosynthesis
chemical change
water cycle
The picture shows the process of photosynthsis. What else do plants need to turn
carbon dioxide
and water into food?
oxygen
carbohydrates
light
chlorophyll
What is the final output of photosynthesis?
The formula for sodium chloride is...
NaCl
Na2Cl
NaCl2
Na2Cl2
The sum of the kinetic and potential energy in a system is known as the system's _____________________ energy.
mechanical
chemical
thermal
combined
Which of the following can be transferred because of a difference in temperature?
Work
Temperature
Heat (energy)
Force
Which of the following statements is true about heat transfer?
It does not transfer.
It transfers only when two objects are of similar temperature.
It transfers from objects of lower temperature to objects of higher temperature.
It transfers from objects of higher temperature to objects of lower temperature.
Which of the following will happen to the internal energy when heat is applied?
It will increase.
It will decrease.
It will stay the same.
It will decrease then increase.
Which of the following converts mechanical energy into electrical energy?
Electrical grid
Electrical Cable
Generator
Transformer
The atomic number of oxygen is
8
15.9994
16
O
Electrons are
Positively charged particles
Negatively charged particles
Neutral
What does the nucleus of an atom contain?
Electrons and neutrons
Protons and neutrons
Electrons and protons
DNA
Metals are located on what size of the periodic table?
left
right
the stairway
the bottom
What is the chemical symbol for Hydrogen?
Hy
Hg
H
h
Microwave ovens heat food through the process of
conduction.
convection
radiation.
stratification
