What is happening? liquid -> solid
freezing
What is an exoskeleton?
a skeleton outside the body
What are the tiny things called that all matter is made of?
Particles
I pull a box with 200N and my friend helps me with 150N what is the net force?
350N
Who is it?
Newton
The particles are tightly packed
solid
Newton law 3: Every action has an ______ and opposite reaction
equal
What shape is it?
round / circle
How do people breathe?
lungs, nose and mouth
Newton law 2: If an object is heavy, does it need more or less force?
MORE (more mass = more force)
What animals have spiracles?
insects
The particles can move freely
gas
chemical change or physical change?
physical change
How do fish breathe?
Gills
What is happening?
evaporation
What is an endoskeleton?
skeleton inside the body
chemical change or physical change?
chemical change
What is happening?
melting
How many laws of motion did Newton have?
3
Newtons law 1: Inertia. What happens if a ball is moving?
it will move forever unless there is a force
The particles can move a little
liquid
What are the three states of matter?
solid, liquid, gas
chemical change or physical change?
chemical change
chemical change or physical change?
physical change
What are stomata?
tiny holes on leaf