Year 7 Flashcards
What is a force?
A push, pull or twist
What is a contact force?
A force that requires contact to occur
Example of a contact force
Friction air resistance and tension
Example of non contact forces
Gravity
What do you measure forces in?
neutons
What happens if forces are balanced in opposite directions
It stays still
What happens if forces are unbalanced
It moves the stronger way
Equation to calculate speed
Distance÷ time
How do you get weight
Mass x gravitational field
What is the strongest force
strong nuclear force
If you are pulling what way is the forcs going (left right or center)
left
If two forces are the same strength what is this called
Balanced force
If a force is 20N left and 60N right which way would it move?
40N->
What cell has a cell wall?
Plant cell
What is the job of a nucleus
Conrol cell and has DNA
What does the ribosomes do?
Create protein
What is mitochondria
Where resperation happens to make energy
How do cells respire?
They take in carbon dioxide
What is precision?
All results are close to each other
What is accurate
Close to the target
What colour is ths safety flame
Yellow
Why is the safety flame called that
Its colder than the others
How to make a graph
1。graph paper
2。draw how long x and y axies are
3。Draw the units/numbers
4。match it up on the graph
What does a red blood cell do
Carry oxygen
What do white blood cells do
Protect your body from
