Life Science (5th)
What organ pumps blood through the human body?
The heart
What force pulls objects towards earth?
Gravity
Earth's rotation
What is the most basic unit of life?
A cell
In order to be considered matter, you must have these two qualities
Mass and takes up space
What layer of crust do we live on?
Crust
What is the difference between an independent and dependent variable
The independent variable is what the scientist changes; the dependent variable is what is measured or observed in response.
WHAT IS THE ORIGINAL NAME OF ALL THE CONTINENTS PUT TOGETHER?
PANGEA
The prey population increases
It stays still or moves at a constant speed
What is the water cycle process when water turns to vapor?
What structure controls what enters and leaves the cell?
Cell Membrane
What are atoms made of?
Protons, neutrons, electrons
What causes earthquakes?
Movement of tectonic plates
Why is it important for scientists to repeat an experiment multiple times before drawing a conclusion?
To ensure results are reliable, consistent, and not due to chance or error.
Plants need these three things to make their own food
Sunlight, Water, Carbon Dioxide
How does friction impact motion?
It slows motion down
What tool is used to measure temperature?
Thermometer
This is the "powerhouse" of a cell?
Mitochondria
A change that forms a new substance is called a
Chemical change
What is the main source of energy for earth's systems?
The sun
How does energy transfer through a food chain, and what happens to energy as it moves from producers to consumers?
Energy flows from producers to consumers and decreases at each level because some energy is lost as heat.
Why are decomposers important? What do they do?
They break down dead organisms and recycle nutrients
Potential energy
Earth's tilt and orbit around the sun
Organisms with helpful traits survive and reproduce more
It is conserved
Weather is short-term. Climate is long-term.
How do scientists use graphs or tables to interpret data?
Scientists look for patterns, trends, and relationships in the data to make conclusions and determine whether their results support or do not support a hypothesis.
What are the three phases of matter?
Solid, liquid, gas
What is the name of the process when water vapor (gas) cools down and turns back into liquid water, such as dew forming on grass in the morning?
Condensation
Why do we see different phases of the moon?
How do mutations effect organisms?
They change traits and may be helpful, harmful or neutral
Force = mass x acceleration
They trap heat and warm the planet
What is the difference between a physical change and a chemical change? Give an example of each.
A physical change changes form or state but not substance (e.g., ice melting). A chemical change creates a new substance (e.g., burning paper).