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1st Grade Science Vocabulary Words

Instructor: Mary Beth Mullikin

Mary Beth has taught 1st, 4th and 5th grade and has a specialist degree in Educational Leadership. She is currently an assistant principal.

Attention all first grade scientists! Science can be fun to learn about, but there are a lot of new words that you'll need to know in order to understand all of the fun and interesting science units in first grade. Come and learn some of these words in this lesson.

The World Around Us

As a first grader, you will learn a lot about earth science. For example, you might study different types of weather or you might learn about how materials change, like how water can turn into ice. Here are a few vocabulary words that you will need to know in order to study these cool things about our world:

  • precipitation: This is just a fancy word for water that comes out of the sky. Precipitation can come in different forms - rain, snow, sleet and hail.
  • thermometer: This is a weather instrument that measures temperature, or how hot or cold something is. The higher the number is on the thermometer, the higher the temperature. So, if the thermometer says 20, then it is 20 degrees outside.
  • rain gauge: This weather instrument is used to measure the amount of precipitation that has fallen. Most of the time, rain gauges will measure using inches or centimeters. You can make your own rain gauge by placing a measuring cup outside.
  • solid: These are objects that have a definite or firm shape, like a box, chair or car. When water is in its solid state, we call it ice, snow or hail.
  • liquid: These are objects that are fluid, like milk, blood or juice. When water is in its liquid state, we just call it water!
  • gas: Just because you can't see something, doesn't mean that it isn't there. Gases do not have a shape and they are sometimes invisible, like oxygen. When water is in its gaseous state, we call it steam or vapor.

Hail is a solid form of precipitation
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Living Things

Do you like learning about living things, like flowers, trees, or even your family pet? Well, then you have a lot to look forward to when you study life science in first grade. Here are some life science vocabulary words to know:

  • animal: Animals are living things, like birds, mammals, reptiles and more. Animals eat plants, other animals or a combination of these.
  • plant: Plants are living things, like trees, grass, flowers and moss. Plants get their food from the sun and grow in one place.
  • root: This is the part of the plant that holds it into the ground.
  • stem: This is the middle part of the plant, like the trunk of a tree, that is attached to the roots.
  • leaf: Some plants have leaves that grow off of their stems. Most of them are flat, and they can be different colors.

Can you find the roots, stem and leaves on this tree?
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