Vocab
This is the form of energy that comes from the sun and helps plants make their food.
light energy
This organ pumps blood throughout your body.
heart
You accidentally touch a hot stove and quickly pull your hand away. Which body system helped you react so fast?
nervous system
This plant part works like lungs in animals because it helps the plant take in gases from the air.
leaves
Before answering a multiple-choice question, what should you always do with all the answer choices?
read all of them carefully
This is the layer of gases that surrounds Earth and helps protect us from harmful rays.
Atmosphere
This organ helps you breathe by taking in oxygen and getting rid of carbon dioxide.
lungs
You plant 2 seeds. One gets sunlight, water, and air. The other stays in a dark cabinet with no water. Only one grows. What did you just complete?
experiment
These thin structures in animals carry oxygen through the body, like the xylem in plants moves water.
blood vessels
If you're not sure of an answer, what should you do before guessing?
eliminate wrong answers
This is the process plants use to make their own food using sunlight, water, and carbon dioxide.
Photosynthesis
This organ helps break down food so your body can use it for energy.
stomach
You mix vinegar and baking soda, and it bubbles and forms gas. What kind of change has taken place?
chemical change
Roots anchor a plant and absorb water. What structure in animals helps with support and movement?
skeleton
You see a diagram with labels. What should you do before answering the question?
study the diagram closely
This is a testable statement or prediction in an experiment.
Hypothesis
This large organ filters your blood and helps remove waste from your body.
liver
You see the moon looks different each night. Over a month, it changes shape. What are you observing?
moon phases
This plant structure carries water from the roots to the leaves. It works like the circulatory system in animals.
Stem
What should you do if a question has words you don't understand?
look for clues in the question or text
This is the amount of space an object takes up.
Volume
This organ controls everything you do, including thinking and moving.
brain
You are building a toy car that moves using a rubber band. You twist the rubber band, then let it go to launch the car. What two forms of energy are involved?
potential energy and kinetic energy
Seeds help plants reproduce. What is a similar structure in animals that helps them reproduce?
eggs
You finish your test early. What is the best thing to do next?
go back and check your answers