Cells, Tissues, Organs and Organ Systems
The life process where living things get rid of waste.
Excretion
The energy store in moving objects.
Kinetic energy
In which state of matter are particles packed closely together in fixed positions?
Solid
Which state of matter has particles far apart and moving quickly?
gas
The jelly-like substance where chemical reactions happen.
cytoplasm
What energy store is full when something is high up off the ground?
Gravitational Potential Energy
What is Brownian motion?
The random movement of tiny particles caused by collisions with moving particles around them.
Which scientist’s observations helped explain Brownian motion?
Robert Brown.
Name two parts found in plant cells but not animal cells.
Cell wall, chloroplasts, permanent vacuole (any two).
The amount of energy in food is measured in…
Joules or Kilojoules
Diffusion is the movement of particles from…
An area of high concentration to low concentration.
What causes air pressure?
Gas particles colliding with surfaces.
A group of similar cells working together is called a…
tissue.
Coal, oil, and natural gas are all examples of…
fossil fuels.
Diffusion happens fastest in which state of matter?
gas
Food gives us this type of energy store.
Chemical energy
This organ absorbs nutrients from digested food.
Small Intestine
Burning fossil fuels releases what gas that contributes to climate change?
Carbon Dioxide
If the number of gas particles in a container increases, pressure…
Increases.
The system responsible for transporting oxygen and nutrients around the body.
Circulatory System