物理
运动学、受力分析、电学与方程推导。
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liang is working with an electrical circuit. she replaces a straight el…
A. increase the strength of the magnetic field when current flows through the circuit
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selena drew a diagram to show how current moves in a loop of wire that …
B. She can change the arrows so they show current traveling in opposite directions on the sides of the loop.
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unit test unit test review active what must be true in order for magnet…
C. The wire must be part of a closed circuit.
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choose the correct answer in each row. the author, an engineer, has exp…
- The author, an engineer, has experience on the subject: Helps determine credibility - The online article is from a published science paper: Helps determine credibility - The aut…
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horatio drew a diagram to illustrate how magnetism is produced by elect…
The magnetic field does not continually spread outward from the wire.
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look at the circuit diagram. how many switches does the diagram show? o…
B. two
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component of a circuit changes, as shown below. how would this change a…
B. A switch is closed, so the circuit would be complete and unbroken and the lights in the circuit would shine. (Note: Assuming the second option is labeled B as per typical multi…
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which best compares a brush and a commutator in an electric motor? both…
B. Both carry electrical current from a power source.
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parker wound a wire around a large iron nail. he then created an electr…
Electromagnet Y is the strongest.
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badri makes the table below to review the factors that affect the elect…
changing "Mass" to "Amount of electric charge"
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the diagram shows two charged objects, a and b based on the field lines…
A: positive B: negative
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which best contrasts an electric generator and an electric motor? in a …
A generator converts kinetic energy to electrical energy, and a motor converts electrical energy to kinetic energy.
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which best compares ac and dc? ac flows in one direction, and dc repeat…
B. DC flows in one direction, and AC repeatedly switches direction.
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helen adjusts the armature of an electric generator by increasing the n…
D. increase the amount of current
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the picture shows a basic diagram of an electric motor. which labels be…
X: Armature, Y: Brush, Z: Commutator (But among the given options, the correct option is the third one: X: Armature, Y: Commutator, Z: Brush – No, I think I made a mistake. Wait, …
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the left side of the armature in an electric motor is pushed down. when…
It is pulled up on the left side
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dante drew a diagram of an electric generator. which best describes dan…
# Brief Explanations: An electric generator works on electromagnetic induction, producing electricity without a battery (batteries are for motors to supply current). The diagram s…
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which uses direct current?
The flashlight (the lower device in the image) uses direct current.
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which reverses the flow of current through an electric motor? brush bat…
D. commutator
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rob is studying for an exam. he listed some properties of magnets in a …
D. The repelling of the support magnet decreases friction.
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what two recurring events in earths history have an impact on the carbo…
A. Earth’s orbit and climate change
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20. select the statement that accurately describes passive immunity. a …
A. Achieved directly through ready - made antibodies.
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19. given that antivenom injections consist of preformed antibodies, wh…
C. Attenuated pathogens
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18. which type of immunity is present in a fetus because it receives an…
B. Naturally acquired passive immunity.
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17. a disease - causing agent is called a pathogen. a true b false chec…
a. TRUE
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14. which type of immunity is provided by colostrum obtained from the m…
C. Naturally acquired passive immunity.
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2. write the word from the box on the line that is being described. dia…
2. a. bronchioles b. cilia c. trachea d. alveoli f. pharynx g. exhalation h. diaphragm 3. 6 (Air is drawn into the lungs) 5 (Air pressure in the chest cavity decreases) 4 (Lungs e…
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a peninsula is a piece of land that is surrounded by unfriendly countri…
water on three sides.
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64. which term describes a protein buildup on the lens of the eye? cata…
A. Cataract
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63. what drugs are prescribed to help loosen and remove impacted cerume…
C. Wax emulsifiers
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61. what term describes a downward displacement of the eyelid? presbyop…
Blepharoptosis
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60. which abbreviation stands for a condition of pain or numbness from …
CTS
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59. which procedure is a surgical repair of cartilage? arthroplasty cho…
Chondroplasty
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58. which disorder is an autoimmune disorder that affects the musculosk…
Rheumatoid arthritis
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posttest 57. the type of fracture in which the bone is broken into piec…
comminuted.
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posttest 56. which term means softening of bone? osteogenesis osteorrha…
Osteomalacia
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posttest 55. what is the meaning of the abbreviation csf? cerebrospinal…
Cerebrospinal fluid
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54. what is the medical word for weakness, debility, or loss of strengt…
A. Asthenia
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53. which of the following disorders is an abnormal accumulation of flu…
Hydrocephalus
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52. drugs that alter neurotransmitters in the brain to alleviate sympto…
antipsychotics.
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posttest 51. a neurologist specializes in: treatment of tumors and canc…
B. disorders that affect the brain, spinal cord, and nerves.
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the young man considered by some to be the \father of radio\ because he…
Armstrong
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50. what is the abbreviation for a blood test that measures the glucose…
B. FBS
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49. which term describes an excision of the adrenal gland to remove an …
Adrenalectomy
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48. what is an incision of the thyroid gland called? thyrostomy thyroto…
Thyrotomy
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47. which disorder is an advanced form of hypothyroidism in adults that…
Myxedema
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state the three possible ways that something can be charged using stati…
Friction, conduction, and induction.
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which hypothesis was confirmed using paleomagnetic evidence? hot spots …
C. seafloor spreading
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6. explain the similarities and differences between the plum pudding mo…
### Similarities: - Both include electrons and a positive - charge component in the atom. - Both recognize the presence of electrons within the atom's structure. ### Differences: …
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which geologic feature was formed by continental - continental converge…
B. the Appalachian Mountains
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in this illustration, which site is an oceanic spreading center? a b c d
A. Site A
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in this illustration, which example is a rift valley? a b c d
D
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which statement best describes the illustration? a mountain forms at a …
D. A volcano forms at an oceanic - oceanic convergence boundary.
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where did the gold of the inca civilization come from? oceanic - contin…
A. oceanic - continental convergence
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the s-p interval of seismic waves recorded at a seismometer is 5 minute…
3,100 km (the option with "3,100 km")
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there is a geological site associated with earthquake activity and a mo…
A. continental - continental convergent boundary
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composite cone volcanoes are often found along what kind of plate bound…
D. convergent
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which material erupted from volcanoes is important in acid rain? ash su…
B. sulfur dioxide
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which feature may interrupt the sides of a composite - cone volcano? co…
C. craters
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in which form of heat transfer do changes in temperature and density pl…
C. convection
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the mid - atlantic ridge is found at a divergent plate boundary. which …
D. A new crust is being formed. (assuming the options are labeled A - D as per the order: 1. Island chains are being formed. 2. Guyots are being destroyed. 3. Crust is pushing aga…
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which observation supported wegeners theory of continental drift? diffe…
B. Identical fossils were found on continents that were far apart.
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which of the following can cause earthquakes? buildup of pressure betwe…
A. buildup of pressure between tectonic plates (along with B and C also being causes, but if we have to pick the most fundamental and common cause among the options, A is the key …
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which portion of the earths interior drives the movement of the plates?…
the mantle
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in a certain area, the african plate moves northeast against the eurasi…
C. because more than two plates are interacting in complex ways
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how are volcanic islands formed? by the subduction of oceanic crust at …
C. by mantle plumes or hot spots erupting underneath moving plates
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what is the most likely cause of plate movement? cold air currents on e…
D. heat convection within the earth
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wegener was intrigued when the same mesosaurus fossils, an ancient fres…
B. The continents were at one time joined together.
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what forms when the earths plates slide past each other? an ocean mount…
D. an earthquake
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plate tectonics can help to explain which phenomena? trenches weather s…
A. trenches
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4. how much charge moves through a 1.5a circuit in 200s? (1)
\(300\space C\)
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which statement about the theory of plate tectonics is true? it states …
A. It states that the earth's surface is broken into pieces.
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earthquakes are produced at what kind of boundary? divergent continenta…
A. divergent, C. convergent
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a central crack forms where a thin section of earths crust breaks and m…
B. volcano
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which german scientist first proposed the idea that continents may have…
A. Alfred Wegener
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this short content quiz covers the information in your reading from 2.0…
A. Random and unrelated features
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how did lord kelvin attempt to determine the age of the earth? by analy…
B. By measuring how quickly rocks conducted heat and calculating cooling time
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47. which disorder is an advanced form of hypothyroidism in adults that…
Myxedema
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what did james hutton conclude from studying unconformities in rock lay…
D. Geological processes such as erosion and sedimentation have always worked in the same way.
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what was the key difference between copernicuss model and ptolemys mode…
D. Copernicus placed the Sun at the center, while Ptolemy placed Earth at the center. (Assuming the last option is D; if the original options had labels like A, B, C, D, use the c…
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posttest 46. which disorder is an autoimmune disease that involves hype…
Graves disease
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which of the following best describes the difference between stars and …
B. Stars appear fixed in constellations, while planets wander against the starry background.
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45. which abbreviation stands for the procedure in which the practition…
B. DRE
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44. excision of a small primary breast tumor is called: mastectomy. abl…
lumpectomy.
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posttest 43. cutting and ligation of the vas deferens performed to ster…
vasectomy.
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42. an ovarian tumor is charted in the medical record as: ovariorrhexis…
oophoroma.
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post test 41. what is the gravest form of pregnancy - induced hypertens…
Eclampsia
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posttest 40. the abbreviation uti stands for: urethral toxic infection.…
urinary tract infection.
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38. uncontrolled loss of urine from the bladder is called: continence. …
incontinence.
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posttest 37. the surgical procedure to correct a prolapsed kidney is ca…
nephropexy.
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read the following passage, then answer the question. john rockefeller …
Standard Oil made the same profits as competing companies.
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36. the term that means difficult or painful urination is: anuria. olig…
dysuria.
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posttest 35. what is a cholelith? pancreatic stone liver stone salivary…
Gallstone
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post test 34. bleeding of the gums is a primary symptom of: gingivitis.…
gingivitis.
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why is the rule of 70 useful in environmental science? it helps predict…
B. It helps estimate how fast the population will double.
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doubling time and growth rate have an inverse (opposite) relationship. …
A. decreases
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33. what is the radiopaque contrast medium used in radiographic studies…
Barium sulfate
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32. which procedure is used to treat morbid obesity? rectal surgery. ba…
bariatric surgery.
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31. which abbreviation stands for the procedure that uses shock waves t…
ESWL
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26. which of the following means formation or production of blood? hemo…
Hemopoiesis