物理
運動學、受力分析、電學與方程推導。
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34. which type of lab equipment is used as a vessel for reactions? a ho…
B. a test tube
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33. which of the following identifies the first major optical telescope…
C. Hubble Space Telescope
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32. which graph should you use to measure the percentages of gases that…
D. pie graph
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30. which scientist discovered that there are other galaxies besides th…
B. Edwin Hubble
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29. which of the following has the longest wavelength and the lowest fr…
C. radio waves
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summarize it! drag and drop the words or phrases that accurately comple…
mechanical, sound, electrical
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28. what color wavelengths in the visible light section of the electrom…
A. red
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27. the universe has both clusters and voids. what is the difference be…
Voids are areas where there is little matter and no galaxies. Clusters are areas with many galaxies.
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practice it! the teacher asks you to walk around the classroom and iden…
B. a printer, D. a computer, E. an electric pencil sharpener
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ordering 1 point place the colors of visible light in the correct order…
1. Red 2. Orange 3. Yellow 4. Green 5. Blue 6. Indigo 7. Violet
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read the passage. then answer the question. for over a year, pocahontas…
It led to peace between Jamestown and the Powhatan tribes.
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practice it! select the option(s) that accurately describe the type of …
A. thermal energy C. potential energy D. sound energy E. heat energy
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24 how does the galaxy movement theory support the big bang theory? the…
The big bang theory states that the universe is expanding. Scientists can look back in time to galaxies beyond the Milky Way and calculate how long it takes the galaxies to expand…
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pregunta 1 (20 puntos) the graph below shows the motion of several obje…
a. A d. D f. F
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23. which of the following is a continuous spectrum crossed by dark lin…
absorption spectrum
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22. which of the following describes the appearance of galaxies decreas…
redshift
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review it! lenore is training for a bodybuilder competition. one of her…
The weight has kinetic (energy of motion) when it is moving up in the air.
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20. in what order should you complete the steps of the scientific metho…
State the problem, gather information, form a hypothesis, test the hypothesis, analyze data, and draw conclusions.
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given this equation for converting temperature from celsius ( ) to fahr…
A. 86
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use the chart on the other side to help you answer the questions below.…
1. The Stamp Act 2. Forced to provide for soldiers at their own expense and invasion of privacy/property rights. 3. The Intolerable Acts (including events related to the Boston Ma…
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19. how can the spectra of a star help a scientist determine whether a …
If the dark lines in the emissions spectra are shifting toward the blue end, the star is approaching Earth. If the dark lines are shifting toward the red end, the star is moving a…
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22 analyze someone tells you theyve heard of a powder that, if worn in …
This claim is pseudoscientific because there is no scientific basis for how the powder works, no controlled experiments have been conducted to prove its efficacy, colds can get be…
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18. the ____ is a theory that states that the universe does not evolve …
D. steady state theory
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17. how does hubble time estimate the age of the universe? hubble time …
Hubble time measures the distances between galaxies and the time they take to expand.
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an object is projected vertically upward from the top of a building wit…
(a) 346 ft (b) 90 ft
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analyzing text structure so lets start with flatness. characters in a f…
by beginning with a topic related to the central idea by defining the topic discussed by providing examples related to the topic
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15. why is the big crunch a hypothesis and not a theory like the big ba…
In contrast to the Big Bang theory, the Big Crunch does not have enough data and evidence to support it.
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14 when did edwin hubble discover a new star from a nebula in a distant…
B. 1914
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so lets start with flatness. characters in a fairy tale are always flat…
by beginning with a topic related to the central idea by defining the topic discussed by providing examples related to the topic
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the quartering acts of 1765 and 1775 forced colonist to: house and supp…
house and supply british soldiers in their homes and with their food. Soldiers could stay as long as needed.
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13. what is the \first second\ in relation to the big bang theory? the …
the beginning of the universe
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practice it! which of the following would have the most thermal energy?…
boiling water in a pot
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12 how did eratosthenes calculate the circumference and tilt of the ear…
Eratosthenes calculated the circumference of the Earth by measuring the angle of the sun's rays and the distance between locations.
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47 the suns gravity has no affect on tides. true false skip 46/47 compl…
B. False
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46 maria formed on the moon prior to the crater impacts. true false ski…
False
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11. what is the purpose of an experiment in the scientific process? to …
to test a hypothesis
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21 explain would it be possible for something to initially be regarded …
Yes, it is possible.
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45 of all the energy produced by the sun, the earth receives only a ver…
True
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44 which best statements explains why liquid water is not present on me…
Temperatures are too hot so the water evaporates
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question 34 the hypothalamus influences the ______ to send messages to …
C. pituitary, endocrine glands
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43 x - rays can easily pass through skin and tissues which make them su…
True
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practice it! juanita took pictures to illustrate four different forms o…
marching band
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10. what is the correct hierarchy of structures within the universe sta…
planet, solar system, galaxy, galaxy cluster
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i found the switch and the bulb sputtered to life, dimmed briefly, then…
Mom is trying to make the move seem more positive than it really is.
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patrick is building a birdhouse for shop class. below is a list of task…
Hammering nails into the roof.
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42 an electromagnetic wave with a short wavelength has ______ than one …
A. more energy, C. more frequency
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9. what term refers to the condition in the experiment that is changed …
D. independent variable
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41 a(n) ____ contains a force produced by charged particles. magnetic p…
C. electric field
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7. what is the first thing you should do if you experience a safety iss…
D. Ask an adult for help
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read the excerpt from \my first march.\. \exactly!\ mama said. \by marc…
She teaches her child that equality is essential.
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40 a 3 - d model is constructed using data from all the following crite…
Spacecraft's temperature of the atmosphere
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a traditional narrative may be structured as a frame story, which is a …
1. transformation 2. transgression 3. quest 4. quest 5. transformation
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6. what feature makes our solar system a heliocentric solar system? all…
All the planets revolve around the sun.
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39 which of the following measurements states the speed of light? 9.5 t…
300,000 kilometers/second
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a person walking in the desert sees a \puddle\ of water far in the dist…
The mirage effect in the desert is caused by the refraction of light due to the temperature - induced density gradient in the air. Light rays from the sky refract as they pass thr…
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38 when referring to right ascension, the zero hour is located at the s…
the spring equinox
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question 29 1 point which of the following is not a part sympathetic ac…
D. digestion functions become more active
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37 for observers in the southern hemisphere, the equinox and solstice d…
False
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what element do the potential solutions of raising the retirement age, …
Each one would require someone to give up money and/or benefits
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3. what is the difference between wavelength and frequency? wavelength …
Wavelength represents the distance between two crests or troughs, and frequency represents the number of waves that occur in an amount of time.
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question 55(multiple choice worth 2 points) (01 01 mc) isabella works f…
They are trying to answer an ethical question, not a scientific one.
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36 which star is located in the center of an h - r diagram because it i…
The sun
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2. why are parsecs, megaparsecs, and gigaparsecs necessary in addition …
Parsecs, megaparsecs, and gigaparsecs are necessary for measuring extremely large distances in space, especially those outside the Milky - Way galaxy. The light - year is a good u…
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35 the more massive a star is, the shorter its lifetime and the smaller…
True
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what primary element of light helps the observer see three - dimensions…
A. intensity
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34 two objects of different weights will fall at the same rate through …
True
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33 ________ make(s) up 99.8% of the total mass of the solar system. the…
C. The sun
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6 matching 8 points match one word for each description. latif wakes up…
1. translucent 2. refraction 3. refraction 4. diffuse 5. Convex lens 6. Concave lens 7. opaque 8. reflect
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question 53(multiple choice worth 2 points) (01 01 lc) what is the most…
It allows other scientists to check findings.
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32 not including visible light, how many other forms of electromagnetic…
B. Six
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31 earth is the only planet in the solar system known to have _. carbon…
C. liquid water on its surface
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5 matching 4 points match up the condition with the correct electromagn…
1. Which type of light wave contains powerful energy made in nuclear explosions and stars? - gamma 2. Name the type of light wave we can see. - visible 3. Which type of electromag…
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question 22 1 point to demonstrate that brain stimulation can make a ra…
C. amygdala
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30 what do scientists believe about the universe since the discovery of…
The universe will continue to expand forever
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29 the sun and all the planets, that make up what we call the solar sys…
about 5 billion years ago
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question 21 which of the following is an active strategy? a i do the pr…
A. I do the practice problems and practice tests from the book.
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28 according to calculations made by the big bang theory, ______ of the…
D. 25%
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drag and drop the words or phrases that accurately complete the paragra…
an experiment, only one variable, control group
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question 50 (multiple choice worth 2 points) some products have been id…
C. Some people are more predisposed to developing cancer when exposed to mutagens
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27 our solar system is part of the ○ milky way galaxy ○ andromeda galax…
A. Milky Way Galaxy
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ordering 1 point reorder the following arrange the following types of e…
1. d. X - rays 2. a. ultraviolet light 3. b. microwaves 4. c. radio waves
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practice it! zoe and zj do an experiment to see which type of insulator…
cup of hot coffee with no insulator
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26 hospital stays due to illnesses have decreased because technological…
improved the techniques used to prevent or treat the diseases
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question 7 (1 point) camdens cat keeps jumping up on the counter. he wa…
positive punishment
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24 technological design process can be accomplished with computers as w…
D. prior knowledge, equipment, and creativity
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question 6 (1 point) pavlov noticed that dogs began salivating at the m…
C. conditioned stimulus
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22 when models are created to be more accurate, they often become too c…
True
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21 scientific models ______ to represent both microscopic objects and v…
leave out components
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20 the system that provides the framework of the human body is the ____…
skeletal system
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19 in the early years, models of the solar system would have placed at …
B. the Earth
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summarize it! drag and drop the words or phrases that accurately comple…
A(n) experiment; one variable is; control; experimental
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d) the cheetah traveled 1.75 times faster for the first 8 minutes than …
Yes, the distance traveled during the first 8 minutes was 1.75 times greater than the distance traveled during the second 8 minutes.
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practice it! which of the following best explains the importance of a c…
A. A control group allows the scientist to compare the data from the variables to how the event would naturally take place.
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18 keplers law of planetary motion ____. describes the atmosphere of ea…
D. describes the movement of the planets
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17 the law of gravity explains the reason a dropped object will fall. t…
True
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read the excerpt from \american indian civil rights.\ one of the most s…
sweeping blows
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practice it! lets look at georges experiment again. he wanted to find o…
beaker with only 100 milliliters of water
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16 the phrase \its just a theory\ is based on which of the following it…
Unproven guesses
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elaina has been diagnosed with a small brain tumor. she first went to s…
B. hypothalamus
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if someone is shocked, the first thing you should do is ________. a. ca…
# Breve explicación: Antes de cualquier otra acción, es crucial detener el flujo de electricidad para evitar que la persona触电 sea expuesta a más riesgo. Una vez que el poder está …