6th Grade Science Quiz Questions And Answers
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Are you in 6th grade and studying science by any chance? If that is affirmative, you should probably take this '6th Grade Science' quiz with informative questions and answers that covers basic science topics. We have specifically designed this quiz to determine how much you have understood so far and if you should progress to the next year. So, give this quiz a try and see how you perform. All the best!
Questions and Answers
- 1.
Which of the 2 things on the list are microorganisms?
- A.
Bacteria
- B.
Mosquito
- C.
Seaweed
- D.
Virus
Correct Answer(s)
A. Bacteria
D. VirusExplanation
Bacteria and viruses are both microorganisms. Bacteria are single-celled organisms that can be found in various environments, including soil, water, and even inside our bodies. They can be beneficial or harmful to humans. Viruses, on the other hand, are smaller than bacteria and are not considered living organisms. They are parasitic and require a host to reproduce. Viruses can cause various diseases in humans, animals, and plants. Mosquitoes and seaweed, although living organisms, are not classified as microorganisms.Rate this question:
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- 2.
All microorganisms are bad. True or false?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement "All microorganisms are bad" is a generalization and is not true. While some microorganisms can cause diseases and harm to humans, not all microorganisms are bad. In fact, many microorganisms are essential for various ecological processes and some are even beneficial to humans, such as the ones used in fermentation, production of antibiotics, and digestion. Therefore, the correct answer is false.Rate this question:
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- 3.
Microorganisms can help make food. Which 3 of these foods do they help to make?
- A.
Cheese
- B.
Yogurt
- C.
Chocolate
- D.
Bread
- E.
Rice Krispies
Correct Answer(s)
A. Cheese
B. Yogurt
D. BreadExplanation
Microorganisms, specifically bacteria and fungi, play a crucial role in the production of cheese, yogurt, and bread. In the case of cheese, bacteria are responsible for converting lactose into lactic acid, which helps in curdling the milk and forming cheese. Yogurt is made by the fermentation of milk by bacteria, which produce lactic acid and give yogurt its characteristic tangy flavor. Similarly, bread is made through the process of fermentation, where yeast, a type of fungus, converts sugars into carbon dioxide gas, causing the dough to rise and giving bread its fluffy texture. Therefore, microorganisms are essential in the production of these three foods.Rate this question:
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- 4.
What do you need to be able to see a microorganism?
- A.
Telescope
- B.
Binoculars
- C.
Microscope
Correct Answer
C. MicroscopeExplanation
To be able to see a microorganism, you need a microscope. A microscope is a scientific instrument that magnifies small objects, allowing us to see them in detail. Unlike a telescope or binoculars, which are used to observe distant objects, a microscope is specifically designed for viewing tiny organisms such as bacteria, viruses, and other microscopic life forms. It uses a combination of lenses and light to magnify the specimen, making it visible to the human eye.Rate this question:
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- 5.
What 2 bad things can microorganisms do?
- A.
Cause disease
- B.
Make bread
- C.
Make bread go mouldy
Correct Answer(s)
A. Cause disease
C. Make bread go mouldyExplanation
Microorganisms can cause disease by infecting and harming the human body, leading to illnesses and infections. Additionally, they can also make bread go mouldy by breaking down the carbohydrates in bread, causing it to spoil and develop mould.Rate this question:
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- 6.
What is bad to do in the kitchen?
- A.
Washing your hands
- B.
Not keeping food in the fridge
- C.
Keeping raw meat stored away from cooked meat
Correct Answer
B. Not keeping food in the fridgeExplanation
Not keeping food in the fridge can lead to food spoilage and the growth of harmful bacteria. Refrigeration helps to slow down the growth of bacteria and prevents food from spoiling quickly. It is important to store perishable foods such as meat, dairy products, and leftovers in the refrigerator to maintain their freshness and prevent foodborne illnesses.Rate this question:
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- 7.
What do antibiotics do?
- A.
Help bacteria to grow
- B.
Kill bacteria that cause disease
Correct Answer
B. Kill bacteria that cause diseaseExplanation
Antibiotics are medications that are used to kill bacteria that cause disease. They work by targeting specific bacteria and inhibiting their growth or destroying them completely. This helps to eliminate the infection and alleviate the symptoms associated with it. Antibiotics are not meant to help bacteria grow, but rather to combat bacterial infections and restore health.Rate this question:
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- 8.
What are forces measured in?
- A.
Issac's
- B.
Newton's
- C.
Friction's
Correct Answer
B. Newton'sExplanation
Forces are measured in Newtons. This is because Newtons is the standard unit of measurement for force in the International System of Units (SI). It is named after Sir Isaac Newton, who made significant contributions to the field of physics, particularly in the study of motion and forces. Therefore, it is appropriate to say that forces are measured in Newtons.Rate this question:
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- 9.
What can I use to measure forces?
- A.
Telescope
- B.
Microscope
- C.
Forcemeter
- D.
Thermometer
Correct Answer
C. ForcemeterExplanation
A forcemeter is a tool specifically designed to measure forces. It is equipped with a spring or other mechanism that can be compressed or stretched by the force being measured. By measuring the deformation of the spring or mechanism, the forcemeter can accurately determine the magnitude of the force. Therefore, a forcemeter is the most suitable tool for measuring forces. A telescope and microscope are used for observing distant objects and magnifying small objects, respectively, while a thermometer is used for measuring temperature.Rate this question:
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- 10.
What will happen if I have two magnets, and I put both the north poles together?
- A.
The magnets will attract
- B.
The magnets will repel
Correct Answer
B. The magnets will repelExplanation
When two magnets have their north poles facing each other, they will repel each other. This is because like poles (in this case, both north poles) repel each other due to the magnetic forces between them. The magnetic field lines of the two magnets will interact in a way that causes them to push away from each other, resulting in repulsion.Rate this question:
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- 11.
What will happen if I have two magnets, and I put one North Pole on one magnet next to a south pole on the other magnet?
- A.
The magnets will attract
- B.
The magnets will repel
Correct Answer
A. The magnets will attractExplanation
When a North Pole of one magnet is placed next to a South Pole of another magnet, they will attract each other. This is because opposite poles attract each other according to the principles of magnetism. The magnetic field lines of the North Pole and South Pole interact and pull the magnets towards each other, resulting in attraction.Rate this question:
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- 12.
Which of these of these are magnetic?
- A.
My smelly socks
- B.
A wooden spoon
- C.
A metal spoon
Correct Answer
C. A metal spoonExplanation
A metal spoon is magnetic because it is made of a material that contains iron, such as stainless steel or cast iron. These materials have magnetic properties and can be attracted to magnets. On the other hand, smelly socks and a wooden spoon do not have magnetic properties as they are made of non-magnetic materials like fabric and wood.Rate this question:
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- 13.
What is the force that pulls us down to Earth and stops us floating into space?
- A.
Friction
- B.
Air resistance
- C.
Gravity
- D.
Upthrust
Correct Answer
C. GravityExplanation
Gravity is the force that pulls objects towards each other. It is responsible for keeping us grounded on Earth and preventing us from floating into space. Gravity is a fundamental force of nature that exists between all objects with mass. It is the reason why objects fall when dropped and why the planets orbit around the sun. Without gravity, everything would be weightless and there would be no stability in the universe.Rate this question:
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- 14.
What is the force that slows down a man falling out of plane with a parachute?
- A.
Friction
- B.
Air resistance
- C.
Gravity
- D.
Upthrust
Correct Answer
B. Air resistanceExplanation
Air resistance is the force that slows down a man falling out of a plane with a parachute. When an object moves through the air, the air molecules push against it, creating a resistance force. This force opposes the motion of the object and causes it to slow down. In the case of a person falling with a parachute, the large surface area of the parachute increases the air resistance, allowing the person to descend at a slower rate. Without air resistance, the person would fall much faster and potentially be injured upon landing.Rate this question:
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- 15.
Which of these forces slows you down if you ride a bike on the grass instead of on a smooth pavement?
- A.
Friction
- B.
Air Resistance
- C.
Gravity
- D.
Upthrust
Correct Answer
A. FrictionExplanation
When riding a bike on grass instead of a smooth pavement, the force that slows you down is friction. Friction is the resistance that opposes motion when two surfaces come into contact with each other. The uneven and softer surface of grass creates more friction compared to the smooth pavement, causing the bike to slow down. Air resistance, gravity, and upthrust do not directly affect the bike's speed in this scenario.Rate this question:
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- 16.
Which 2 forces are balanced and stop a boat from sinking?
- A.
Friction
- B.
Air resistance
- C.
Gravity
- D.
Upthrust
Correct Answer(s)
C. Gravity
D. UpthrustExplanation
Gravity and upthrust are the two forces that are balanced and prevent a boat from sinking. Gravity pulls the boat downwards, while upthrust, also known as buoyant force, pushes the boat upwards. When these two forces are equal, the boat remains afloat and does not sink.Rate this question:
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- 17.
Which 3 of these are light sources?
- A.
The sun
- B.
Electric lamp
- C.
A teapot
- D.
A pencil case
- E.
A candle
Correct Answer(s)
A. The sun
B. Electric lamp
E. A candleExplanation
The sun, electric lamp, and candle are all light sources. The sun emits light and heat naturally, making it the primary source of light during the day. Electric lamps are man-made light sources that use electricity to produce light. Candles produce light through combustion, where the heat from the flame causes the wax to melt and release energy in the form of light. However, a teapot and a pencil case are not light sources as they do not emit light.Rate this question:
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- 18.
Which of these are not a light source?
- A.
The sun
- B.
The moon
- C.
A candle
Correct Answer
B. The moonExplanation
The moon is not a light source because it does not produce its own light. Unlike the sun and a candle, which emit light, the moon only reflects the sunlight that it receives from the sun. Therefore, it is not considered a light source itself.Rate this question:
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- 19.
How fast does light travel?
- A.
As fast as a tortoise
- B.
As fast as me cycling my bike
- C.
300 000 000 metres per second
- D.
As fast as a car runs
Correct Answer
C. 300 000 000 metres per secondExplanation
Light travels at a speed of 300,000,000 meters per second. This is the speed at which electromagnetic radiation, including visible light, travels through a vacuum. It is the fastest speed possible and is commonly referred to as the speed of light.Rate this question:
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- 20.
What would be better at reflecting light?
- A.
A shiny surface
- B.
A dull surface
- C.
Scrubbed surface
- D.
Opaque surface
Correct Answer
A. A shiny surfaceExplanation
A shiny surface would be better at reflecting light because it has a smooth and polished texture that allows light to bounce off it easily. The smoothness of the surface reduces the scattering of light, resulting in a higher degree of reflection. In contrast, a dull surface has a rough texture that causes light to scatter in different directions, reducing the overall reflection. A scrubbed surface may have some reflective properties depending on its smoothness, but it would not be as effective as a shiny surface. An opaque surface, by definition, does not allow light to pass through it, so it would not reflect light effectively.Rate this question:
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