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Grade 3 Science — This world of things

Say what the things around you are made of and where the material came from, sort solids from liquids and gases, and tell transparent from translucent from opaque.

Name: ________________________

Before you start

Three panes with the same lamp behind each, and the word for each one.

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  1. 1. Transparent
  2. 2. Translucent
  3. 3. Opaque

Same lamp behind each pane. The first shows it sharply, the second shows a faint glow where it is, and the third shows nothing — so the third pane could be hiding anything.

  1. 1.Where do the metals in the door hinges and nails come from?

    • a) They are collected from the beds of rivers
    • b) They are extracted from rock and sediment dug up from inside the Earth
    • c) They are made by mixing sand with water
    • d) They are grown in fields and then heated

  2. 2.What does the chapter say a solid is?

    • a) Something you cannot see through
    • b) Something that feels cold to the touch
    • c) Something that does not change its shape
    • d) Something heavy enough to sink

  3. 3.The chapter says water poured into a cup stays there. What does it say happens if you pour air into a cup?

    • a) It pushes the cup over
    • b) It does not stay — it floats in and out
    • c) It turns into water droplets
    • d) It sits in the bottom of the cup

  4. 4.Sort these into things that exist in nature and things people have made.

    Groups: Natural · Artificial

    • Air
    • Clothes
    • Rock
    • Shoes
    • Table
    • Water

  5. 5.The chapter gives one surprising fact about what glass is made of. What is it mostly?

    • a) Clay
    • b) Ice
    • c) Salt
    • d) Sand

  6. 6.Sort each of these into solids, liquids and gases.

    Groups: Solid · Liquid · Gas

    • Air
    • Spoon
    • Ink
    • Honey
    • Stone

  7. 7.The chapter closes with these pairs. Match each word to the thing it describes.

    • Transparent
    • Translucent
    • Opaque
    • a lamp shade made of paper
    • a glass used in spectacles
    • a plate

  8. 8.Most kinds of glass let you see straight through them. What is the word for a material like that?

Answer key — Grade 3 Science — This world of things

  1. 1. b) They are extracted from rock and sediment dug up from inside the Earth
  2. 2. c) Something that does not change its shape
  3. 3. b) It does not stay — it floats in and out
  4. 4. Rock → Natural; Water → Natural; Air → Natural; Clothes → Artificial; Shoes → Artificial; Table → Artificial
  5. 5. d) Sand
  6. 6. Stone → Solid; Spoon → Solid; Ink → Liquid; Honey → Liquid; Air → Gas
  7. 7. Transparent → a glass used in spectacles; Translucent → a lamp shade made of paper; Opaque → a plate
  8. 8. transparent