Class-3-Science Olympiad Questions and Answers
Class 3 Science Olympiad Questions with Answers are designed to strengthen young learners’ conceptual understanding of basic science topics such as plants, animals, energy, the human body, and natural phenomena. These aptitude test practice sets help students develop logical and scientific thinking through engaging, objective-type questions. Each question comes with an easy explanation to encourage curiosity and concept clarity. Olympiad-style aptitude questions and answers PDFs are perfect for both school-level and national-level exam preparation. Students can take free online tests to track progress and build confidence. This section is ideal for early learners aiming to excel in competitive school science exams.
Class-3-Science Olympiad
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157 questions
61. When you touch ice, you feel how cold it is. Which system is responsible to carry this message to your brain ?
- Excretory system
- Nervous system
- Skeletal system
- Muscular system
62. Study the following list of actions (i) Reading a storybook. (ii) Enjoying music over the radio. (iii) Answering the telephone when it rings. (iv) Watching an interesting documentary on the television. Which of the above actions does a blind person unable to do ?
- (ii) & (iii)
- (i) & (iv)
- (i), (iii) & (iv)
- All of these
63. Your baby sister is sleeping in your room. You are reading a book at your study table. Your baby sister wakes up and lets out a cry. Which of your senses help you to know that your baby sister is crying ?
- Sense of touch and sight
- Sense of smell and touch
- Sense of hearing and touch
- Sense of sight and hearing
64. Select the INCORRECT option.
- Helps in producing babies - Reproductive system
- Controls our actions - Nervous system
- Provides oxygen to all parts of the body - Respiratory system
- Removes wastes from the body - Excretory system.
65. Which of the following is the largest sense organ of our body ?
- Skin
- Eyes
- Ears
- Tongue
67. Bits of food sticking to the teeth causes growth of bacteria. Bacteria attack the teeth which causes tooth decay. Tooth decay causes
- Headache
- Bad Breath
- Hunger
- Itching
68. The imaginary line on which the Earth is tilted is called
- Equator
- Axis
- Cancer
- Tropic
69. I revolve around the Sun. I am first member of the solar system. I am the hottest of all other members. what am I ?
- Earth
- Mercury
- Mars
- Jupiter
70. You are making a model of the Earth and Moon to show their relative sizes and massiveness. If you take cricket ball as an Earth, then ______ can be taken as moon.
- Lawn tennis ball
- Table tennis ball
- Basket ball
- Volley ball