Question 1(Multiple Choice Worth 1 points)

Mike is in a hardware store. He hears a large crash and turns toward the noise. He sees a toddler walking by an overturned cart. Mike states that "the toddler knocked over the cart.” His statement is

 an inference because he did not observe the cause of the crash.

 an inference because he blamed it on someone else.

 an observation because he saw the cause of the crash.

 an observation because he heard the cart turn over.

Question 2(Multiple Choice Worth 2 points)

What is the main energy conversion that occurs when you plug in a lamp?

 Electrical energy is converted to nuclear energy.

 Thermal energy is converted to electrical energy.

 Electrical energy is converted to radiant energy.

 Nuclear energy is converted to radiant energy.

Question 3(Multiple Choice Worth 2 points)

A scientist in London and a scientist in California both conducted independent investigations that produced similar results. 

What does this mean about the data that was collected?

 The findings are considered stronger and more reliable because they were repeated.

 The scientists will have to compete for the credit for this discovery.

 The scientific community will vote on the name of any resulting theory, in order to keep things fair.

 The findings are automatically promoted to a law because they were proven by two different scientists.

Question 4(Multiple Choice Worth 2 points)

A Scottish chemist Thomas Graham observed and experimented with gas particles in the 1800s. He formulated a mathematical equation that describes the relationship between the mass of a gas molecule and its rate of effusion. This relationship is a

 law because it describes what happens without explaining why.

 law because it is based on mathematics.

 theory because it describes a relationship.

 theory because it is a description without an explanation.

Question 5(Multiple Choice Worth 2 points)

You are writing a report on whether global warming really exists. Which of the following resources would be the most scientifically reliable?

 an article containing documented experiments and data

 a newspaper article quoting leaders of several countries

 a website with articles posted by people around the world

 an article containing a poll taken of students at leading universities

Question 6(Multiple Choice Worth 2 points)

The Atomic Theory states that protons and neutrons are packed closely together in a small nucleus and electrons are found surrounding that nucleus.

Which of the following statements explains why this is considered to be a scientific theory?

 It is an educated guess that has been voted on by the majority of the scientific community.

 It is the best explanation because it is a culmination of many scientific investigations.

 It is a scientific hypothesis that has been proven by more than one experiment.

 It is the best explanation because it supports the beliefs and opinions of most scientists.

Question 7(Multiple Choice Worth 1 points)

Which statement is the best example of pseudoscience?

 Katarina joined a group that studies phrenology.

 C.J. joined a group that studies endangered species.

 Mike joined a group that studies herbal remedies.

 Lee joined a group that studies stars and planets.

Question 8(Multiple Choice Worth 2 points)

It would not be practical to use scientific experimentation to test the effect of

 color on brain waves and function.

 octave on the quality of a song.

 adrenaline on the response time of carnivores.

 nutrients on the gender of offspring .

Question 9(Multiple Choice Worth 2 points)

The atoms and molecules in a liquid are in constant motion. As temperature decreases, what is true of the particles in the liquid?

 the rate of particle movement decreases

 the distance between the particles decreases

 the attraction between the particles decreases

 the potential energy of the particles decreases

Question 10(Multiple Choice Worth 2 points)

Which statement best describes scientific laws?

 Scientific laws are scientists' opinions of why events occur in nature.

 Scientific laws describe specific relationships in nature without offering an explanation.

 Scientific laws explain why natural events occur.

 Scientific laws were theories that have been tested, proven, and adopted as laws.

Question 11(Multiple Choice Worth 2 points)

Which of the following best represents potential energy being converted to kinetic energy?

 A roller coaster starts at the top of a hill and then rolls down the hill.

 A pitcher throws a baseball, and then the batter hits a homerun.

 A man jogs around the block and then stops to drink an energy drink.

 A woman peddles her bicycle across town and back again.

Question 12(Multiple Choice Worth 2 points)

Shari is trying to determine how music affects a person’s pulse rate. She has her mother listen to classic rock at a high volume for 30 minutes, her younger brother listen to classical music quietly while he sleeps at night, and her grandmother listen to two hours of rap at a medium volume. She records each person’s pulse before and after listening to the music. 

What is missing from Shari’s scientific investigation?

 an experiment that takes initial and final measurements

 a specific hypothesis to test with a controlled experiment

 experimental data that can be recorded and analyzed

 test subjects willing to participate in the experiment

Question 13(Multiple Choice Worth 2 points)

What unit would you use if you were measuring the average kinetic energy of a substance?

 joules

 calories

 Celsius

 Watts

Question 14(Multiple Choice Worth 2 points)

Which of the following is an example of a scientific theory?

 Scientists use three mathematical laws to predict the movement of planets in the solar system.

 Scientists observe the effect of climate changes on plants and primary producers living in the ocean.

 Scientists use the relationship between the DNA of various species to estimate how long ago they diverged evolutionarily from each other.

 Scientists agree that there is an amount of attraction between any two objects, called gravity, and can describe the attraction in mathematical terms.

Question 15(Multiple Choice Worth 2 points)

Convert 24 cm to the unit km.

 0.00024 km

 0.24 km

 2.4 x 105 km

 2.4 x 10-3 km

Question 16(Multiple Choice Worth 2 points)

Which of the following could be considered a scientific statement?

 "I think that cookies taste much better than cake.”

 "I observed that butterflies prefer the yellow flowers.”

 "Yellow is a cheerful color.”

 "I believe there is life on other planets.”

Question 17(Multiple Choice Worth 2 points)

What would you use to measure the volume of a liquid?

 balance

 graduated cylinder

 ruler

 spectroscope

Question 18(Multiple Choice Worth 2 points)

Which of the following is not true of a pseudoscience?

 It is a practice or belief that claims to be science.

 It does not follow the scientific method.

 It is not proven reliable through experimentation.

 It is a science that is controversial or unproven.

Question 19(Multiple Choice Worth 2 points)

Observation and experimentation have led scientists to accept a theory about the atom. This theory is called the Atomic Theory. Scientific evidence collected and observed by scientists over time suggests that the atom has a nucleus, containing protons and neutrons, and electrons that travel as waves around the nucleus.What makes this a scientific theory?

 It has been proven to be scientific fact through all the experiments and investigations.

 It is based on the beliefs and opinions of the majority of the scientific community.

 It is an observation of the natural world that has been proven as fact.

 It is based on many scientific investigations and is accepted by the majority of scientists.

Question 20(Multiple Choice Worth 2 points)

All of the following are true about science except

 It is a body of knowledge.

 It does not change once a law is discovered.

 It is tested by many scientists over time.

 It uses the scientific method.

Question 21(Multiple Choice Worth 2 points)

The atomic theory has been revised many times over the last several hundred years. John Dalton described the atom as a solid sphere, while later scientists such as J.J. Thomson and Ernest Rutherford developed different models of the atom. 

Why has the atomic theory changed so much over the last several centuries?

 A new scientific method helps scientists form more efficient theories and models.

 As new discoveries are made, existing theories are revised or replaced.

 The atom has changed over time, and new theories must reflect those changes.

 Scientists with different opinions look for evidence to support their theories.

Question 22(Multiple Choice Worth 2 points)

The density of a sample of metal is calculated using these three different sets of data: 0.6 g/mL, 2.4 g/mL, and 1.8 g/mL. If the true density of the metal is 1.2 g/mL, what can be said about these calculated density values?

 The set is both accurate and precise.

 The set is accurate but not precise.

 The set is precise but not accurate.

 The set is neither accurate nor precise.

Question 23 (Essay Worth 4 points)

Explain, in your own words, what makes something a science.

Be sure to include the types of questions that can be answered by science and the types of questions that are beyond the boundaries of scientific investigation.

Question 24 (Essay Worth 4 points)

Using what you have learned about scientific investigations, explain the statement: 

"One feature that makes scientific knowledge so strong and durable is that it is open to change.”

Question 25 (Essay Worth 4 points)

A scientific theory is considered to be the most powerful explanation scientists have to offer for a given phenomenon. Explain what makes a theory such a strong explanation.

Question 26 (Essay Worth 4 points)

Explain how creativity can play a role in the construction of scientific questions and hypotheses.

Question 27 (Essay Worth 2 points)

Some scientific evidence suggests that our universe is ever-expanding from a hot and dense initial state. Briefly describe at least one piece of evidence that supports the theory known as the Big Bang.

SuperTutor

(15)

Status NEW Posted 19 Jun 2017 01:06 AM My Price 20.00

-----------

Attachments

file 1497834529-Solutions file.docx preview (56 words )

S-----------olu-----------tio-----------ns -----------fil-----------e -----------Hel-----------lo -----------Sir-----------/Ma-----------dam----------- T-----------han-----------k y-----------ou -----------for----------- yo-----------ur -----------int-----------ere-----------st -----------and----------- bu-----------yin-----------g m-----------y p-----------ost-----------ed -----------sol-----------uti-----------on.----------- Pl-----------eas-----------e p-----------ing----------- me----------- on----------- ch-----------at -----------I a-----------m o-----------nli-----------ne -----------or -----------inb-----------ox -----------me -----------a m-----------ess-----------age----------- I -----------wil-----------l b-----------e q-----------uic-----------kly----------- on-----------lin-----------e a-----------nd -----------giv-----------e y-----------ou -----------exa-----------ct -----------fil-----------e a-----------nd -----------the----------- sa-----------me -----------fil-----------e i-----------s a-----------lso----------- se-----------nt -----------to -----------you-----------r e-----------mai-----------l t-----------hat----------- is----------- re-----------gis-----------ter-----------ed -----------on�-----------�th-----------is -----------web-----------sit-----------e. ----------- H-----------YPE-----------RLI-----------NK -----------&qu-----------ot;-----------htt-----------p:/-----------/wo-----------rkb-----------ank-----------247-----------.co-----------m/&-----------quo-----------t; -----------\t -----------&qu-----------ot;-----------_bl-----------ank-----------&qu-----------ot;----------- -----------Tha-----------nk -----------you----------- -----------

Not Rated(0)

• Buy Answer