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3rd Grade Science Practice — Iowa Assessments (ITBS) Prep

This 3rd Grade science practice set covers the scientific reasoning and content knowledge assessed on the Iowa Assessments (ITBS). Students will answer questions spanning life science, earth and space science, and physical science, while also demonstrating scientific inquiry skills such as forming hypotheses, interpreting data, and drawing conclusions from experiments. The science section of the Iowa Test of Basic Skills evaluates students' understanding of key scientific concepts and their ability to think like scientists. These practice questions help students prepare for the types of science items they will encounter on the actual assessment while building broad scientific literacy.

Total Questions: 50 Grade: 3rd Grade Iowa Level: Level 8 Ages: 8-9
Life SciencePhysical ScienceEarth Science

Science

3rd Grade Smart Prep Test for IOWA/IBTS

0 of 50 answered
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Review All 50 Practice Questions

Life Science

  1. What do plants need to make their own food? (Sunlight, water, and carbon dioxide | Milk, bread, and meat | Soil and rocks only | Darkness and cold air)
  2. What process do plants use to make food from sunlight? (Digestion | Respiration | Photosynthesis | Hibernation)
  3. Which part of the plant takes in water from the soil? (Leaves | Flowers | Roots | Stems)
  4. What gas do plants release during photosynthesis? (Carbon dioxide | Oxygen | Nitrogen | Helium)
  5. What is the main job of a flower? (To make food | To take in water | To make seeds | To hold the plant up)
  6. Which part of the plant carries water from the roots to the leaves? (Flowers | Stem | Seeds | Fruit)
  7. What do we call plants that live for only one year? (Perennials | Annuals | Trees | Evergreens)
  8. How do most seeds travel to new places? (They walk | Wind, water, animals, or people | They stay in one place | They dig underground)
  9. What happens to a seed when it starts to grow? (It melts | It germinates | It evaporates | It freezes)
  10. Which part of the plant makes most of the food? (Roots | Stems | Leaves | Flowers)
  11. Animals with backbones are called: (Invertebrates | Vertebrates | Insects | Reptiles only)
  12. Which of these is NOT a mammal? (Dog | Whale | Snake | Bat)
  13. What is the life cycle stage of a butterfly after it is a caterpillar? (Egg | Adult butterfly | Chrysalis (pupa) | Larva)
  14. Animals that eat only plants are called: (Carnivores | Herbivores | Omnivores | Predators)
  15. What do amphibians need to keep their skin moist? (Sunlight | Water | Heat | Fur)
  16. Which animal goes through metamorphosis? (Dog | Horse | Frog | Bird)
  17. Reptiles are cold-blooded. What does this mean? (Their blood is frozen | Their body temperature changes with their environment | They live in cold places only | They have blue blood)
  18. Which of these animals lays eggs? (Dog | Cat | Chicken | Cow)
  19. What do fish use to breathe underwater? (Lungs | Gills | Skin | Fins)
  20. Animals that eat both plants and animals are called: (Herbivores | Carnivores | Omnivores | Producers)
  21. In a food chain, what is a producer? (An animal that eats other animals | An organism that makes its own food (like plants) | An animal that is eaten by others | A decomposer)
  22. What happens to dead plants and animals in nature? (They disappear forever | They are broken down by decomposers | They turn into rocks | They float away)
  23. What is a habitat? (A type of food | The place where an animal or plant lives | A baby animal | A kind of weather)
  24. Which of these is an example of a decomposer? (Lion | Tree | Mushroom | Rabbit)
  25. Why is the Sun important to most food chains? (It keeps animals warm | It provides energy for plants to make food | It creates water | It makes soil)

Physical Science

  1. What are the three states of matter? (Hot, cold, and warm | Solid, liquid, and gas | Big, medium, and small | Light, dark, and clear)
  2. Which of these is a solid? (Water | Air | Rock | Oxygen)
  3. What happens when water freezes? (It becomes a gas | It becomes a solid (ice) | It disappears | It becomes hotter)
  4. What is evaporation? (Water turning from liquid to gas | Water turning from gas to liquid | Water turning into ice | Water disappearing forever)
  5. Which state of matter has a definite shape? (Liquid | Gas | Solid | Steam)
  6. What is mass? (How tall something is | The amount of matter in an object | The color of something | How fast something moves)
  7. Which tool is used to measure mass? (Ruler | Thermometer | Balance or scale | Clock)
  8. What happens when you mix salt in water? (The salt disappears forever | The salt dissolves but is still there | The water turns into ice | The salt becomes a gas)
  9. A mixture can be separated. Which is an example of a mixture? (Water | Salt | Trail mix (nuts and raisins) | Ice)
  10. Which property describes how shiny an object is? (Texture | Size | Luster | Weight)
  11. What makes a ball roll down a hill? (Wind | Gravity | Magnetism | Electricity)
  12. What type of energy does a moving car have? (Potential energy | Light energy | Kinetic energy | Sound energy)
  13. What force slows down a sliding object? (Gravity | Friction | Magnetism | Push)
  14. Which materials are attracted to magnets? (Plastic and wood | Glass and rubber | Iron and steel | Paper and cloth)
  15. What is needed to make an electrical circuit work? (A complete loop for electricity to flow | Only wires | Only a battery | Magnets)
  16. Light travels in: (Curves | Circles | Straight lines | Zigzags)
  17. What kind of energy does the Sun give us? (Sound energy only | Light and heat energy | Electrical energy only | Magnetic energy)

Earth Science

  1. What causes day and night? (The Sun moving around Earth | Earth rotating on its axis | The Moon blocking the Sun | Clouds covering the Sun)
  2. How long does it take Earth to orbit the Sun? (One day | One month | One year | One week)
  3. What are the three layers of the Earth? (Water, land, and air | Crust, mantle, and core | Rocks, sand, and soil | Top, middle, and bottom)
  4. What type of rock is formed from cooled lava? (Sedimentary | Metamorphic | Igneous | Mineral)
  5. What is weathering? (Looking at the weather forecast | Breaking down of rocks over time | Wind blowing | Rain falling)
  6. Which resource is renewable? (Oil | Coal | Sunlight | Natural gas)
  7. What causes the phases of the Moon? (The Moon changing size | Clouds covering the Moon | The Moon orbiting Earth and how sunlight hits it | The Sun moving)
  8. What is erosion? (Rocks getting bigger | Moving of weathered rock and soil by water, wind, or ice | Volcanoes erupting | Plants growing)
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