mater 1
Unit 2 - Energy
Unit 3 - Fluid Pressure
Unit 4 - Force & Motion
Unit 5 - Atoms, Periodic Table & Chemistry
100
Define - When the temperature of a gas at constant pressure is increased, its volume increases.
When pressure is held constant, the volume and temperature of a gas are directly proportional.
100
where does solor energy comes froms
the sun
100
How do depth and density affect fluid pressure?
The standard SI unit for pressure is the Pascal (Pa).
100
Balanced Forces
When the net force equals zero, forces are balanced. An object at rest stays at rest, and an object in motion continues moving at a constant speed in a straight line.
100
Protons ( p+)
Positive charge, mass of 1 amu, determines the identity of the element.
200
Define - When the pressure of a gas at constant temperature is increased, the volume of the gas decreases.
When temperature is held constant, the pressure and volume of a gas are inversely proportional.
200
what wold an eaple of clean energey
sun
solor
200
How does atmospheric pressure change with altitude?
Atmospheric pressure decreases as altitude increases. This occurs because there is less air (and therefore less weight) pushing down from above as you go higher in the atmosphere.
200
Unbalanced Forces
When the net force is greater than zero, forces are unbalanced. This causes the object to speed up, slow down, or change direction (accelerate)
200
Neutrons (N0)
Neutral charge, mass of 1 amu. Atoms of the same element with different neutron counts are called isotopes
300
water can take up more space
then cookies
300
what is hidrow pawer
pawer from the water
300
A fisherman with a mass of 75kg falls asleep on his four-legged chair of mass 5 kg. If each leg of the chair has a surface area of 2.5×10-4 m2 in contact with the ground, what is the average pressure exerted by the fisherman and chair on the ground?
300
Motion
makes the world go 'round
300
Electrons (e-)
Negative charge, negligible mass, occupy electron shells (orbitals) around the nucleus.
400
three type of matter
is elements and compounds and mixtures
400
what are fossil fuels
coal
oli
gas
400
A scale which reads 0 in the vacuum of space is placed on the surface of planet Physica. On the planet’s surface, the scale indicates a force of 10,000 Newtons. Calculate the surface area of the scale, given that atmospheric pressure on the surface of Physica is 80,000 Pascals?
400
Force
is just a fancy word for pushing or pulling.
400
Periods
The horizontal rows. Elements in the same period have the same number of electron shells.
500
the air can take up more space then a
bag
500
Kinetic Energy
For example, a rolling ball or running person.
500
Rank the following from highest pressure to lowest pressure upon the ground:
- The atmosphere at sea level
- A 7000-kg elephant with total area 0.5 m2 in contact with the ground
- A 65-kg lady in high heels with total area 0.005 m2 in contacting with the ground
- A 1600-kg car with a total tire contact area of 0.2 m2
From highest pressure to lowest pressure:
- The elephant (137,000 Pa)
- The lady in high heels (127,000 Pa)
- The atmosphere (100,000 Pa)
- The car (78,400 Pa)
500
These two forces
act at a distance and do not require direct contact between the objects to function.
500
Groups / Families
The vertical columns. Elements in the same group have the same number of valence (outermost) electrons and share similar chemical properties.