Strand 1 Test Notes Flashcards
Hazard
The danger associated with a particular object/chemical
Risk
The chance of something happening
Base or Bunsen burner
Prevents the Bunsen from toppling
Collar of Bunsen burner
Controls the amount of air allowed into the Bunsen,also responsible for different flame types
Chimney of Bunsen burner
Raises the flame to a suitable height
Air hole of the Bunsen burner
Allows air to enter the bunsen
Variable
Something that you change or changes in a experiment
Categoric data
Described by a label
Discrete data
A while number
Ordered data
Data can be put into order but not given an actual number
Continuous data
Could have any number
Meaning of astronomy
The study of objects beyond the earths atmosphere
What is the force of gravity
An active force which affects anything with mass
Meaning of mass
The amount of matter an object contains
Meaning of weight
The force of gravity acting on an object
Gravitational field strength
-earth exerts a force of 10N on each mass of 1KG
Gravitational field strength on earth
10N/kg
What is the moons gravitational field strength
1/6 of earths gravitational field strength
How can stars be seen
Stars produce their own heat and light by a process called nuclear fusion
How can moons be seen
They reflect light off of planets and stars
How is the moon kept in orbit with earth
By force of gravity and speed
How does the moon affect tides
-gravitational pull
-high tides
-low tides
-sun
-earths tilt
Gravitational pull meaning
The moons gravity pulls on earth’s water,this causes water in the oceans to move,creating tides
High tides
The earths side which is closer to the moon has gravitational pull,which forms a bulge on either side of the earth as both sides are being affected by the moons gravitational pull
