ENERGY AND PARTICLES

Question 1

fields

Answer 1

• places where forces act on an object at a distance
• magnitudes known as vectors

Question 2

gravitational field

Answer 2

when objects are attracted to each other due to their mass

Question 3

electrical fields

Answer 3

any particle that is charged
- the electric field direction is always directed away from the positive charges, and towards the negative (the fields will go from positive to negative)

Question 4

magnetic field

Answer 4

• moving electricity/electrons
• from N to S

Question 5

magnetized object

Answer 5

when all of the charges in every domain point to the same direction

Question 6

electromagnetic field

Answer 6

combination of electric and magnetic fields

Question 7

energy

Answer 7

• the ability to do work
• measured in joules and calories

Question 8

principal of conservation

Answer 8

energy is neither created or destroyed, it is transformed

Question 9

kinetic energy

Answer 9

energy in motion

Question 10

potential energy

Answer 10

• energy related to mass
• the higher the mass the higher the potential energy
• more distance results in more potential energy
• everything that has mass has energy

Question 11

specific heat

Answer 11

how much a material can store heat

Question 12

latent heat

Answer 12

how much energy is invested for matter to change state

Question 13

nuclear energy

Answer 13

contained in the atomic level

Question 14

uranium

Answer 14

• it has the highest density of all elements
• 235

Question 15

E=mc^2

Answer 15

mass and energy are interchangeable

Question 16

energy density

Answer 16

• how much energy can be stored in a given mass or volume
• the higher the water content in the material, the lower the energy density

Question 17

velocity

Answer 17

distance/time

Question 18

acceleration

Answer 18

• change in velocity
• vf-vi/t

Question 19

inertia

Answer 19

an object will not change its motion unless acted on by an unbalanced force

Question 20

motion

Answer 20

• the acceleration produced by a net force on an object is directly proportional to the net force
• F=ma

Question 21

action/reaction

Answer 21

forces act in pairs, whenever one object exerts a force on a second, the second object exerts an equal force on the first object

Question 22

black bodies

Answer 22

• black bodies emit all types of wavelengths
• for black bodies to emit a wavelength, they need to be exposed to the same wavelength

Question 23

quantum

Answer 23

energy is not continuous, it is produced in chunks

Question 24

barcodes

Answer 24

the quantum when an electron gains or loses energy has an equivalent in the visual spectrum

Question 25

atomic numbers

Answer 25

number of protons in an element

Question 26

atomic mass

Answer 26

number of protons + neutrons

Question 27

period

Answer 27

determines how many levels of energy an atom has

Question 28

group

Answer 28

determines the amount of electrons in the valance layer

Question 29

thought experiment

Answer 29

used by philosophers or physicists (einstein) to explore complex ideas and concepts using the power of imagination and reasoning

Question 30

paradigm shift

Answer 30

fundamental change in basic concepts, theories or methodologies, leading to a new understanding or perspective that alters the way scientists approach and interpret phenomena