Test 3

Question 1

How do you find an objects acceleration

Answer 1

divide the change in velocity by the change in time

Question 2

how do you find the momentum of an object

Answer 2

momentum= mass x velocity or p=mv

Question 3

what vessel carries blood from the heart to the body

Answer 3

the aorta

Question 4

pathway of blood through the heart (VC Ray’s rav went from LA to LV Airport)+ 2 valves

Answer 4

vena cava-right atrium- (tricuspid valve)- right ventricle- Left atrium- (mitral/bicuspid valve) -left ventricle- Aorta

Question 5

what is a photon

Answer 5

light particle

Question 6

what is ohm’s law

Answer 6

ohms measures resistance. the law states that resistance= voltage/current

Question 7

difference between smooth muscle and cardiac/skeletal muscles is

Answer 7

lack of striations or bands on smooth muscle

Question 8

how do you calculate the work exerted on an object

Answer 8

work= force x distance w=fd

Question 9

the velocity of a wave can be found by multiplying ___ by ___

Answer 9

frequency by wavelength

Question 10

how is electrical potential measured?

Answer 10

electrical potential is measure in volts

Question 11

what does watts measure

Answer 11

watts measure power

Question 12

what do amperes measure

Answer 12

amperes measure current

Question 13

what is Newton’s 1st law

Answer 13

Newtons 1st law= intertia.

Question 14

What is Newtons 2nd law

Answer 14

Newtons 2nd law= acceleration. acceleration of an object requires force which is calculated by force=ma

Question 15

What is Newtons 3rd law

Answer 15

Newtons 3rd law= force. states that when one object applies force to second object the second object applies an equal and opposite force to the first object

Question 16

groups on periodic table left to right

Answer 16

1 hydrogen (non metal), alkali metals, alkaline earth metals, transition metals, post transition metals, metalloids (diagonal), non metals, halogens, noble gas

Question 17

DNA is made up of what

Answer 17

nucleic acids

Question 18

Reflection vs Refraction vs Diffraction

Answer 18

reflection= when light bounces back at the same angle in which it hits an object
refraction= when light changes speed as it goes from one medium to another ex rainbow- suns light bends thru rain drops and makes color
diffraction= bending of waves around obstacles in their path ex color rainbow pattern on back of cd

Question 19

for resistance to stay constant when ___ is up ___must be down per Ohms law. ___ and ___ are inversely proportional

Answer 19

volts and current are inversely related when it comes to resistance per Ohms law.
resistance= volts/ current