What process do plants use to make their own food?
Photosynthesis
What is the name of the layer of gases surrounding Earth?
atmoshere
What is matter?
anything that has mass and takes up space?
what is the first step of the scientific method?
asking a question
What is the main function of the heart?
pump blood throughout the body?
Name the three main parts of a plant.
roots, stem, leaves
What do we call the movement of the Earth's plates?
plate tectonics
What is the force that pulls objects toward each other?
Gravity
What do we call a test that is conducted to support or disprove a hypothesis?
an experiment
How many bones are in the adult human body?
206
What is the largest organ in the human body?
skin
What is the water cycle?
continuous movement of water through evaporation, condensation, and precipitation
What is the term for a change in matter that does not create a new substance?
physical change
what is a hypothesis?
proposed explanation that can be tested?
What system of the body is responsible for fighting diseases?
immune system
What type of animal is a frog?
amphibian
Name the 3 rock types
igneous, sedimentary, and metamorphic?
What is the basic unit of a chemical element?
An atom
what do you do with the data you collect during an experiment?
you analyze it
What system helps to break down food for nutrients and energy?
digestive system
What is the role of decomposers in an ecosystem?
break down dead materials and reuses it for nutrients
What causes seasons on earth?
the tilt of the Earth's axis and its orbit around the sun?
What is energy?
the ability to do work or cause change?
What is the final step in the scientific method?
you make a conclusion
What is the function of red blood cells?
carry oxygen throughout the body?