Year 4 Science Quiz Questions And Answers!

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| By Melknightadams
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Melknightadams
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Quizzes Created: 4 | Total Attempts: 111,487
| Attempts: 30,771
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  • 1/17 Questions
      How do you measure temperature? - ProProfs

      How do you measure temperature?

    • With a microscope
    • With a thermometer
    • With a telescope
    • With telescope
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About This Quiz

Are you a year four student or a parent of a 4 year-old student who needs to practice for the next science test? With these science quiz questions and answers, you can now check how well you have studied during your science classes. This quiz is a quick review of what the student has learned about science and if they remember that. While playing this quiz, you will also get to learn many new things. So, take the quiz, check your knowledge, learn something new and have fun!

Year 4 Science Quiz Questions And Answers! - Quiz

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  • 2. 
      What does your skull protect? - ProProfs

      What does your skull protect?

    • Heart

    • Lungs

    • Brain

    • Kidney

    Correct Answer
    A. Brain
    Explanation
    The skull protects the brain. The brain is a vital organ responsible for controlling the body's functions, processing information, and coordinating movement. The skull acts as a protective barrier, shielding the brain from external impact and injury.

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  • 3. 

    Which of the following animal does NOT have a skeleton?

    • Dog

    • Fish

    • Snail

    • Horse

    Correct Answer
    A. Snail
    Explanation
    Snail does not have a skeleton. Unlike dogs, fish, and horses, snails belong to a group of animals called mollusks, which typically have a soft body protected by a hard shell. However, this shell does not function as a skeleton in the same way that bones do. Instead, the snail's shell provides support and protection, but it is not a rigid structure that supports the body's movements. Therefore, the snail is the correct answer as it is the only animal listed that does not have a skeleton.

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  • 4. 

    What is the main purpose of the skeletal system in the human body?

    • To help the body move and support its structure

    • To digest food

    • To pump blood throughout the body

    • To produce energy for the body

    Correct Answer
    A. To help the body move and support its structure
    Explanation
    The skeletal system's primary function is to support the body's structure, protect vital organs, and enable movement by working with muscles. Bones act as a framework that gives the body its shape, while joints and muscles work together to allow motion. Additionally, the skeletal system produces blood cells in the bone marrow and stores essential minerals like calcium, making it crucial for overall health and bodily functions.

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  • 5. 
      Does a snail have a backbone? - ProProfs

      Does a snail have a backbone?

    • Yes, it is a vertebrate.

    • No, it is an invertebrate.

    Correct Answer
    A. No, it is an invertebrate.
    Explanation
    Snails are classified as invertebrates because they do not have a backbone or a vertebral column. Invertebrates are animals that lack a spinal column, and instead have other structural support systems. Snails have a soft body protected by a hard shell, but they do not possess a backbone like vertebrates do. Therefore, the correct answer is that a snail is an invertebrate.

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  • 6. 
    Which one of these is solid? - ProProfs

    Which one of these is solid?

    • Oxygen

    • A textbook

    • Fizzy lemonade

    • Milkshake

    Correct Answer
    A. A textbook
    Explanation
    A textbook is solid because it has a definite shape and volume. Unlike oxygen, which is a gas, fizzy lemonade and milkshake, which are liquids, a textbook maintains its form and does not flow or take the shape of its container.

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  • 7. 
    Which of the following is a good thermal conductor? - ProProfs

    Which of the following is a good thermal conductor?

    • Rubber

    • Wood

    • Glass

    • Aluminum

    Correct Answer
    A. Aluminum
    Explanation
    Thermal conductivity is the ability of a material to transfer heat. Good thermal conductors allow heat to pass through them easily. Aluminum is an excellent thermal conductor, which is why it is used in cookware, heat sinks, and other applications where efficient heat transfer is desired. Rubber, wood, and glass are thermal insulators, meaning they resist the flow of heat.

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  • 8. 
    Does a frog have a backbone? - ProProfs

    Does a frog have a backbone?

    • Yes, it is a vertebrate.

    • No, it is an invertebrate.

    Correct Answer
    A. Yes, it is a vertebrate.
    Explanation
    Frogs are classified as vertebrates because they have a backbone or a spinal column. Vertebrates are animals that possess a well-developed internal skeleton made of bones or cartilage, which includes a backbone. This structure provides support and protection for the frog's body and allows for movement. Therefore, the correct answer is that a frog is a vertebrate.

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  • 9. 
      Which one of these is a liquid? - ProProfs

      Which one of these is a liquid?

    • A pencil

    • Orange juice

    • Ice cube

    • A pen 

    Correct Answer
    A. Orange juice
    Explanation
    Orange juice is a liquid because it is a fluid substance that can flow and take the shape of its container. It does not have a fixed shape or volume, and it is not solid like a pencil, ice cube, or pen.

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  • 10. 
      What is the process called to turn an ice cube into liquid water? (Solid to a liquid) - ProProfs

      What is the process called to turn an ice cube into liquid water? (Solid to a liquid)

    • Freezing

    • Melting

    • Dissolving

    • Evaporation 

    Correct Answer
    A. Melting
    Explanation
    Melting is the correct answer because it refers to the process of turning a solid, such as an ice cube, into a liquid, in this case, water. The process of melting occurs when heat is applied to the solid, causing the particles to gain energy and move more rapidly, breaking the bonds that hold them together in a solid state. As a result, the ice cube transitions into a liquid state, becoming liquid water.

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  • 11. 
      How can I separate the stones in my soil? - ProProfs

      How can I separate the stones in my soil?

    • Using a magnet

    • Using a sieve

    • Using a filter paper

    • None of the above

    Correct Answer
    A. Using a sieve
    Explanation
    Using a sieve is the correct answer because it is a common and effective method for separating stones from soil. A sieve consists of a mesh screen that allows smaller particles like soil to pass through while retaining larger particles like stones. By pouring the soil onto the sieve and shaking it, the stones will be left behind on top of the sieve while the soil falls through. This process helps to remove unwanted stones from the soil, making it more suitable for gardening or other purposes.

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  • 12. 
    What is the process called to turn water into an ice cube (liquid to a solid)?   - ProProfs

    What is the process called to turn water into an ice cube (liquid to a solid)?  

    • Freezing

    • Melting

    • Dissolving

    • Condensation

    Correct Answer
    A. Freezing
    Explanation
    Freezing is the process of turning water from a liquid to a solid state, resulting in the formation of an ice cube. During freezing, the water molecules lose energy and slow down, causing them to arrange themselves into a solid structure. This process occurs when the temperature of the water drops below its freezing point, which is 0 degrees Celsius or 32 degrees Fahrenheit.

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  • 13. 
      Which of these materials CANNOT dissolve into water? - ProProfs

      Which of these materials CANNOT dissolve into water?

    • Coffee

    • Sand

    • Salt

    • Sugar

    Correct Answer
    A. Sand
    Explanation
    Sand cannot dissolve into water because it is composed of large, solid particles that do not have the ability to separate and disperse into the water molecules. In contrast, coffee, salt, and sugar are all soluble in water, meaning they can dissolve and form a homogeneous mixture with the water molecules.

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  • 14. 

    Which part of the plant is responsible for making food through photosynthesis?

    • Roots

    • Stem

    • Leaves

    • Flowers

    Correct Answer
    A. Leaves
    Explanation
    Leaves are the primary sites of photosynthesis in plants. They contain chlorophyll, a green pigment that absorbs sunlight, which is the energy source for photosynthesis. The leaves also have tiny pores called stomata that allow for the exchange of gases, such as carbon dioxide and oxygen, which are essential for the process.

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  • 15. 

    What is the primary function of muscles in the human body?

    • To create movement by contracting and relaxing.

    • To protect internal organs by forming a hard outer shell.

    • To store large amounts of water for the body.

    • To sense changes in the environment and respond.

    Correct Answer
    A. To create movement by contracting and relaxing.
    Explanation
    The primary function of muscles in the human body is to create movement. Muscles work by contracting (shortening) and relaxing (lengthening), which allows different parts of the body to move. This function is essential for walking, running, jumping, and even for movements as fine as writing with a pencil.

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  • 16. 

    What do plants need to make their own food through the process of photosynthesis?

    • Soil, air, and light

    • Water, air, and sunlight

    • Water, soil, and light

    • Soil, sunlight, and air

    Correct Answer
    A. Water, air, and sunlight
    Explanation
    Plants make their own food through a process called photosynthesis. For photosynthesis to occur, plants need three main ingredients: water (which they absorb through their roots), air (specifically carbon dioxide from the air), and sunlight (which they capture using chlorophyll in their leaves). The combination of these elements allows plants to produce glucose, which they use for energy and growth, and oxygen, which they release into the atmosphere. Soil is important for anchoring plants and providing nutrients, but it is not a direct component of photosynthesis.

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  • 17. 

    Which of the following is NOT a characteristic of all living things?  

    • They grow and develop. 

    • They reproduce. 

    • They respond to their environment. 

    • They can move freely.

    Correct Answer
    A. They can move freely.
    Explanation
    While many living things can move, movement is not a universal characteristic of life. Plants, for example, are rooted in place and cannot move freely. However, all living things grow and develop, reproduce, and respond to stimuli in their environment.

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  • Current Version
  • Jun 16, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 26, 2010
    Quiz Created by
    Melknightadams

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