Subject Knowledge Review - Science
The world is a combination of art and science. However, most of the things can be explained in both ways. Either way, the quiz below is set to test and upgrade you science general knowledge.
- 1.Which of the following correctly completes the sentence below? All living organisms:
- A.
Excrete, grow, move, reproduce, respire, think and are sensitive to their surroundings.
- B.
Excrete, feed, grow, move, reproduce, respire and are sensitive to their surroundings.
- C.
Excrete, grow, move, mutate, respire and are sensitive to their surroundings.
- D.
Excrete, feed, grow, reproduce, signal and are sensitive to their surroundings.
- 2.Which of the following best describes the role of the circulatory system in humans? 1. Carries food to body cells. 2. Carries oxygen around the body. 3. Carries waste products.
- A.
1, 2 and 3
- B.
1 and 2 only
- C.
2 and 3 only
- D.
1 and 3 only
- 3.What name is given to a group of organisms, with similar characteristics, which can breed with each other to produce fertile offspring?
- A.
A clone
- B.
A family
- C.
A genus
- D.
A species
- 4.
![Illustrated below are some 2 spot ladybirds. Which biologocal feature does this represent?
- ProProfs]( "Illustrated below are some 2 spot ladybirds. Which biologocal feature does this represent?")
Illustrated below are some 2 spot ladybirds. Which biologocal feature does this represent?- A.
Growth
- B.
Reproduction
- C.
Selection
- D.
Variation
- 5.For characteristics to be inherited by living organisms
- A.
Mutations occur within the cell of the organism
- B.
There has to be a mutation of genes within cells
- C.
Asexual reporoduction has to take place
- D.
Genetic material has to be passed from one generation to another
- 6.Which of the following results in the least variation among offspring?
- A.
Sexual reproduction
- B.
Asexual reproduction (cloning)
- C.
Mutation
- D.
Recombination of genentic material
- 7.Our current understanding of evolution is based on the idea that:
- A.
Changes which occur in living things are harmful to the species
- B.
Mutation of genes have led to beneficial changes
- C.
There are a fixed number of living organisms
- D.
Species which breed with other species produce new organisms
- 8.Scientists classify all living things into which of these groups?
- A.
Plants and animals
- B.
Plants, animals and fungi
- C.
Plants, animals and bacteria
- D.
Plants, animals, fungi and bacteria
- 9.In an ecosystem there is interaction between all
- A.
Plants living in a habitat
- B.
Animals living in a habitat
- C.
Plants and animals living in a habitat
- D.
Plants and animals and their physical environment
- 10.Which statement about bacteria is correct?
- A.
They always cause diseases
- B.
They are only found in living organisms
- C.
They are only found in dead organisms
- D.
They have a wide distribution
- 11.All materials are made up of elements. Approximately how many elements are there?
- A.
10
- B.
20
- C.
50
- D.
100
- 12.The forces holding atoms together are best called:
- A.
Attachments
- B.
Bonds
- C.
Joins
- D.
Links
- 13.Which of the following is an example of a chemical reaction?
- A.
Ice melting
- B.
Iron rusting
- C.
Salt dissolving in water
- D.
Sugar crystallising
- 14.Physical changes involve changes in the arrangements and spacing of particles but no new substances are formed. Which of the following is an example of a physical change?
- A.
Baking a cake
- B.
Milk going sour
- C.
Petrol burning
- D.
Water evaporating
- 15.The table gives information about the melting points and boiling points of four substances. Room temperature is about 20°C Substance Melting Point /°C Boiling Point / °C P -95 111 Q 17 118 R 114 183 S 1455 2835 Which statement is correct?
- A.
Substance P will freeze solid on a very cold day
- B.
Substance Q could be a liquid on some days and solid on others
- C.
Substance R never forms a liquid
- D.
Substance S cannot evaporate
- 16.A drop of water contains
- A.
One molecule of water
- B.
Hundreds of molecules of water
- C.
Thousands of molecules of water
- D.
Millions of molecules of water
- 17.A dish of warm water is left to evaporate. Which of the following statements about evaporation is true?
- A.
A dish of cold water would evaporate more quickly
- B.
A liquid with a higher boiling point than average would evaporate more quickly
- C.
Molecules with higher than average energy escape from the surface
- D.
Warm water would evaporate more slowly on a windy day
- 18.
![The reaction of hydrogen and iodine can be represented by:
In this reaction - ProProfs]( "The reaction of hydrogen and iodine can be represented by:
In this reaction")
The reaction of hydrogen and iodine can be represented by: In this reaction- A.
Bonds between hydrogen atoms are formed
- B.
Bonds between iodine atoms are formed
- C.
Bonds between hydrogen atoms and iodine atoms are formed
- D.
No bonds are broken or formed
- 19.A closed jar containing ice cubes is placed on a balance. The reading is noted. After an hour, the ice cubes have melted. Which of these statements is correct?
- A.
The reading is more because ice cubes float
- B.
The reading is less because the volume of the ice cubes has decreased
- C.
The reading is less because water is less dense than ice
- D.
The reading stays the same because mass in neither lost or gained
- 20.Particles called electrons are present
- A.
In all forms of matter
- B.
Only in matter which conducts electricity
- C.
Only in liquid or solid matter
- D.
Only in matter which has a charge of electricity passing through it
- 21.Copper wire is a good electrical conductor because
- A.
Some electrons in the metal can move easily within the wire
- B.
The particles of copper can move easily within the wire
- C.
It is encased in plastic
- D.
Copper already contains electricity
- 22.The electrical resistance of a conductor is
- A.
The measure of the difficulty of the flow of electrons through the conductor
- B.
A measure of density of the conductor
- C.
A measure of the flow of electricity through the conductor
- D.
The measure of the voltage which has passed through the conductor
- 23.The batteries in a torch make the bulb light because they
- A.
Transmit electricity to the bulb through the air like radio waves
- B.
Give out chemicals which pass around the circuit and are used up
- C.
Push the electrons around the circuit in one direction
- D.
Make electrons flow outwards to the light bulb where they are used up
- 24.In a complete circuit, the flow of electricity
- A.
Is the same through the switch, through the bulb and along the wire
- B.
Is greater through the wire in the bulb than elsewhere in the circuit
- C.
Is less through the wire in the bulb than elsewhere in the circuit
- D.
Is less at the end of its journey than at the beginning
- 25.
![When this curcuit is complete - ProProfs]( "When this curcuit is complete")
When this curcuit is complete- A.
The bulb transfers power from the battery
- B.
The battery gains energy from the bulb and becomes warm
- C.
The bulb transfers the energy stored in the battery to light and heat
- D.
The potential energy is controlled by the length of the electrical wire
Questions: 20 | Attempts: 59265 | Last updated: Jul 7, 2021
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