Physics and Chemistry Concepts Quiz

Questions and Answers

Which of these reduces friction?

Oil

Ball bearings (correct)

Rubber

Graphite

When a lobster grows a claw to replace one that was lost, what is this process called?

Regeneration

What is any astronomical body that revolves around a larger body called?

Satellite

In chemistry, what must a substance contain to be classified as an organic substance?

Carbon atom Signup and view all the answers

Which element does NOT contain any neutrons?

Hydrogen Signup and view all the answers

What does the chemical formula of a compound describe?

Ratio of elements in the compound Signup and view all the answers

What is the symbol for the hydroxyl ion?

OH- Signup and view all the answers

The tympanic membranes are also known as the?

Ear drums Signup and view all the answers

Which of the following actions produces a chemical change?

Adding salt to the hot water Signup and view all the answers

Choking is prevented by the?

Epiglottis covering the voice box Signup and view all the answers

What do a hydrogen molecule and an oxygen molecule have in common?

Size Signup and view all the answers

Which of the following is a non-renewable source?

Natural gas Signup and view all the answers

A perpetual-motion machine can never be built because it is not possible to eliminate?

Elasticity Signup and view all the answers

Which of the following is a renewable source?

Peanut oil Signup and view all the answers

When scientists measure a liquid's resistance to flow, they are measuring the liquid's?

Viscosity Signup and view all the answers

A student bought a sandwich for 80 cents, milk for 20 cents, and pie for 30 cents. How much did the meal cost?

1.30 Signup and view all the answers

If a radar reports 30 tracks in one minute, what percentage of the time did the radar track the aircraft?

50% Signup and view all the answers

A bag of potting soil is 1/4 peat moss. What part is dirt?

3/4 Signup and view all the answers

An airplane is at 32,000 feet above sea level and descends at an average rate of 1,000 feet per minute. How many minutes will it take for the airplane to land at 3,000 feet above sea level?

29 Signup and view all the answers

A child is 2 1/2 feet tall. The child's mother is twice as tall as the child. How tall is the child's mother?

5 feet Signup and view all the answers

If postage costs 22 cents for the first ounce and 17 cents for each additional ounce, what is the cost of postage for a letter weighing 3 ounces?

$0.56 Signup and view all the answers

If a cyclist travels an average of 24 miles per day, how many days will it take to travel 600 miles?

25 Signup and view all the answers

In a class of 800, how many had a C average if 1/8 graduated with an A average and 1/2 got a B?

300 Signup and view all the answers

SMALL most nearly means?

Little Signup and view all the answers

EMPHASIZE most nearly means?

Accentuate Signup and view all the answers

We will long remember our PERILOUS journey?

Hazard Signup and view all the answers

INEPT most nearly means?

Bungling Signup and view all the answers

ADAGE most nearly means?

Proverb Signup and view all the answers

ADMONITION most nearly means?

Warning Signup and view all the answers

DECRY most nearly means?

Disparage Signup and view all the answers

MORATORIUM most nearly means?

Suspension Signup and view all the answers

CAJOLE most nearly means?

Wheedle Signup and view all the answers

What is the sale price of a sweater originally priced at $80 marked down by 25%?

60 Signup and view all the answers

How many sales must Terry make to earn $765 altogether if Terry earns a $250 salary plus $5 per sale?

103 Signup and view all the answers

If a baker doubles a recipe that calls for 6 2/3 cups of flour, how many cups of flour will be needed?

13 1/3 Signup and view all the answers

Together, two incomes total $28,000. One is $2,000 more than the other. What is the smaller income?

13,000 Signup and view all the answers

A pizza is cut into 8 equal pieces. A person who eats 1/2 of one piece eats what fraction of the pizza?

1/16 Signup and view all the answers

If a homeowner plans to hang wallpaper on a wall that is 10 feet long and uses strips of wallpaper that are 20 inches wide, how many strips of wallpaper will be required?

5 Signup and view all the answers

If 2,200 people attended a football game and 3/4 were NOT season ticket holders, how many were?

550 Signup and view all the answers

Most companies have a policy against nepotism, which is?

Hiring relatives Signup and view all the answers

CONTENTIOUS most nearly means?

Quarrelsome Signup and view all the answers

UNPRETENTIOUS most nearly means?

Simple Signup and view all the answers

BROACH most nearly means?

Mention Signup and view all the answers

COMMUNIQUE most nearly means?

Message Signup and view all the answers

VIRULENT most nearly means?

Abrasive Signup and view all the answers

CONSTRUE most nearly means?

Interpret Signup and view all the answers

Roosevelt made conscious use of the media almost from the moment he entered the White House. What can be inferred about Roosevelt?

Was a president who recognized the power of the press Signup and view all the answers

Which of the following sentences would most likely come next in the paragraph about home security?

For example, leaving the radio on during the day can make a home sound occupied Signup and view all the answers

According to the passage, a fable differs from a fairy tale in that a fable has?

An ethical meaning Signup and view all the answers

The woman's flying training detachment was the brainchild of Jacqueline Cochran. What does this passage suggest?

Existence of the woman's flying training detachment Signup and view all the answers

What can be inferred from the passage about the importance of a good apple?

Crispness Signup and view all the answers

What does the paragraph imply about oil-based paints?

They peel when applied to damp wood Signup and view all the answers

What is the author's main point regarding leisurely vacations?

Inactive vacations are not for everyone Signup and view all the answers

Which of the following is the main point of the passage about individuals changing history?

An individual has the power to change history Signup and view all the answers

What was the author's main point regarding diamonds?

Diamonds represent wealth and affluence Signup and view all the answers

What is the relationship between caffeine and individuals' reactions?

At different times, depending on one's sensitivity Signup and view all the answers

If A=6 and B=5, what is the value of (A^2-B^2)^2?

121 Signup and view all the answers

If x+3y=7 and y=2, what does x equal?

1 Signup and view all the answers

What is 5x times (3x^2-5)?

15x^3-25x Signup and view all the answers

What is the sum of 3x^3-2x+8, 2x^2+5x and x^3+2x^2-3x-3?

4x^3+4x^2+5 Signup and view all the answers

If x=4, which expression does not equal 9?

X-(-5) Signup and view all the answers

If 2^x=32, what is x?

5 Signup and view all the answers

Solve for the following equation for D; B=CD. What is D?

B/C Signup and view all the answers

What is 3A^2+a^2 added to a+6?

4a^2+a+6 Signup and view all the answers

If x=-2 and y=3, what is the value of 2y-x?

4 Signup and view all the answers

What is 12/50 in its simplest form?

6/25 Signup and view all the answers

What is -25-8?

-33 Signup and view all the answers

What is -2^5?

-32 Signup and view all the answers

What is the area of a parallelogram if its length is x+4 and its height is x+3?

x^2+7x+12 Signup and view all the answers

What does the abbreviation AC stand for?

Alternating current Signup and view all the answers

Which of the following tools is used to remove a molecule from an electronic assembly?

Chip puller Signup and view all the answers

Silicon chips are used primarily in?

Integrated circuits Signup and view all the answers

What does a standard multimeter NOT measure?

Frequency Signup and view all the answers

Where current flow is interrupted by a blown fuse, the circuit becomes?

Open Signup and view all the answers

This is the symbol for a?

Transformer Signup and view all the answers

When measuring resistance with an ohmmeter, what should you do?

Observe polarity Signup and view all the answers

Electrical current flowing from one company to the next is an example of what kind of circuit?

Parallel Signup and view all the answers

When one wire conductor is coded with solder, the process is called?

Tinning Signup and view all the answers

Utility company power lines carry what kind of current?

Alternating Signup and view all the answers

Which of the following is not part of any car's drivetrain?

Transmission Signup and view all the answers

Which engine component stores oil for lubrication?

Oil pan Signup and view all the answers

The catalytic converter is part of what system?

Emission control system Signup and view all the answers

How many crankshafts are there in a V-8 automobile engine?

1 Signup and view all the answers

Pistons are usually made from what material?

Aluminum Signup and view all the answers

What kind of wrench should be used to tighten engine components such as manifold and cylinder heads?

Torque wrench Signup and view all the answers

A torque wrench is used to tighten a bolt when?

The exact amount of force on the bolt has to be measured Signup and view all the answers

Mechanical or hydraulic devices that regulate the speed of a machine are called?

Governors Signup and view all the answers

Which of the following is usually supplied in two parts that must be mixed prior to use?

Silicone rubber Signup and view all the answers

Study Notes

Physics and Chemistry Concepts

Ball bearings are used to reduce friction in mechanisms.
Regeneration refers to the process by which a lobster can regrow a lost claw.
Celestial bodies that revolve around larger bodies are called satellites.
Organic substances must contain carbon atoms to be classified as such.
Hydrogen is the only element without neutrons, existing solely with one proton.
The chemical formula of a compound indicates both the elements present and their respective ratios.

Chemical Compounds and Reactions

The symbol for the hydroxyl ion is OH-.
The tympanic membranes, commonly known as ear drums, play a vital role in hearing.
Dissolving salt in hot water produces a chemical change.
The epiglottis acts as a barrier to prevent choking by covering the voice box.
Viscosity is a measure of a liquid's resistance to flow.

Mathematics and Financial Calculations

A student's meal costing 80 cents for a sandwich, 20 cents for milk, and 30 cents for pie totals $1.30.
A radar that tracks 30 times in a minute has a 50% tracking efficiency.
If a bag of potting soil is 1/4 peat moss, then 3/4 of it is dirt.
An airplane at 32,000 feet descending to 3,000 feet will take 29 minutes at a rate of 1,000 feet per minute.
If the first ounce of postage costs 22 cents and adds 17 cents for each additional ounce, a 3-ounce letter costs 56 cents.

Measurements and Weight

A pizza cut into 8 pieces with half of one piece eaten means 1/16 of the pizza is consumed.
A homeowner needs 5 strips of wallpaper for a 10-foot wall if each strip is 20 inches wide.
In a class of 800, with 1/8 graduating with an A, 1/2 with a B, the remaining 300 had a C average.

Vocabulary and Language Skills

"Small" is synonymous with "little."
"Emphasize" means to accentuate something.
"Perilous" relates to danger, while "inept" describes a bungling manner.
"Adage" represents a proverb, whereas "admonition" signifies a warning.

Reading Comprehension Insights

Understanding that media played a crucial role in Roosevelt's presidency highlights his acknowledgment of its influence.
Simple, inexpensive household objects can effectively secure homes, such as keeping a radio on.
Individuals, regardless of their stature, can make impactful changes in history, evident through various historical figures.
Diamonds are valued for their brilliance, often overlooked in ancient times compared to colored stones like rubies and sapphires.

Electronic Principles and Applications

Caffeine acts as a mild stimulant with varying effects based on individual sensitivity.
Electrical circuits can be classified as open when interrupted by a blown fuse, and transformers serve specific functions within electrical systems.
Power lines typically transmit alternating current, and a different potential is necessary to create electric flow.

Automotive Knowledge

The catalytic converter is a critical component of the emission control system in vehicles.
V-8 automobile engines typically have 8 crankshafts, while aluminum is the preferred material for pistons.
Torque wrenches are specialized tools used for accurately tightening engine components to ensure proper force application.

Electrical Safety Practices

When measuring resistance with an ohmmeter, it is important to observe polarity.
Chip pullers are instruments designed to remove molecules from electronic assemblies.

These notes consolidate essential knowledge across various subjects, aiding in the understanding and retention of key concepts.

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Description

Test your knowledge on essential physics and chemistry concepts. This quiz covers topics such as friction, regeneration in lobsters, chemical compounds, and the properties of elements. Prepare to challenge your understanding of both fundamental principles and chemical reactions.