Physics
Cells
Atmosphere
Human Body Systems
Anything Goes!
100
What is an object used for comparison to determine if an object is in motion?
reference point
100
What is the function of the cell wall?
to provide support and structure to the cell
100
What forms clouds and is considered water in the form of a gas?
water vapor
100
What is the process of breaking down food in your body?
digestion
100
A ramp is an example of a simple machine called an _____________.
inclined plane
200
What kind of energy does an object have if it is sitting still?
potential
200
Which organelles store food and other materials needed by the cell?
vacuoles
200
What is the most abundant gas in the atmosphere?
nitrogen
200
What substance is brought into the body by the respiratory system?
oxygen
200
What does the term resolution refer to when using a microscope?
the sharpness of the image
300
What type of friction would a tire on the road have?
Rolling Friction
300
Which protist is formed by a colony of ciliates and contains chlorophyll?
volvox
300
What instrument measures air pressure?
barometers
300
True or False: Eggs are produced in the fallopian tubes. (make true if false)
False, eggs are produced in the ovaries
300
List three sources of natural pollution.
forest fires volcanoes wind carrying pollen and mold
400
If a force is unbalanced, objects will _________.
move, no longer remain at rest
400
Which organelles release chemicals that break down large food particles into smaller ones?
lysosomes
400
List the four main layers of atmosphere from lowest to highest elevation.
1. troposphere 2. stratosphere 3. mesosphere 4. thermosphere
400
How many chromosomes does an organism get total from mom and dad?
46 (23 from each parent)
400
What is the main cause of air pollution?
the burning of fossil fuels (driving cars)
500
What does a horizontal line represent on a distance vs. time graph?
no motion
500
Describe the function of mitochondria.
They convert energy from food particles into energy the cell can use.
500
As air pressure increases, density ________.
increases
500
What is the joining of an egg and sperm called (scientifically)?
fertilization
500
Needed substances are carried through the body by _____________.
blood
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