Book Highlights

Question 1

When _______ atoms are bound together chemically, they form molecules of an element.

1. Like
2. Unlike

Answer 1

LIKE

Question 2

A molecule is the smallest division which can be made in a substance and still retain all the properties?

Answer 2

Question 3

When UNLIKE atoms are bound together, they form a molecule of a?

Answer 3

COMPOUND

Question 4

When 2 different elements or compounds are mixed together and the molecules DO NOT combine chemically, the substance is known as a?

Answer 4

MIXTURE

Question 5

What 2 things determine the state of matter?

Answer 5

TEMPERATURE

&

PRESSURE

Question 6

When a substance is heated, its activity or molecular speed is increased and the volume of the substance normally expands?

Answer 6

TRUE

Question 7

Convert Fahrenheit to Centigrade, subtract 32 and multiply the remainder by 5/9.

Answer 7

Question 8

Convert Centigrade to Fahrenheit, multiply by 9/5 and then add 32.

Answer 8

Question 9

When the temperature can reach no lower, and molecular motion has ceased, that temperature is know as?

Answer 9

ABSOLUTE ZERO

-460F DEGREES

Question 10

Formula for Density or Specific Weight of an object?

Answer 10

DENSITY = TOTAL WEIGHT / VOLUME

Question 11

A closed space from which all air or gasses have been removed is called a?

Answer 11

VACUUM

Question 12

The resistance of a fluid to flow is called?

Answer 12

VISCOCITY

Question 13

What are the 2 forms of energy?

Answer 13

POTENTIAL & KINETIC

Question 14

Energy due to the position of the mass is called?

Answer 14

POTENTIAL

Question 15

Energy due to the motion of a mass is called?

Answer 15

KINETIC

Question 16

The rate at which work is done is called?

Answer 16

POWER

Question 17

What are the 2 types of Velocity?

Answer 17

CONSTANT

&

VARIABLE

Question 18

The force or shock which results when the movement of a confined liquid is suddenly arrested or accelerated is called?

Answer 18

WATER HAMMER

Question 19

Velocity is the rate a mass travels in a particular direction

Answer 19

TRUE

Question 20

The six simple machines are?

Answer 20

1. LEVER
2. INCLIED PLANE
3. WEDGE
4. SCREW
5. WHEEL & AXLE
6. PULLEY

Question 21

Levers of the third class multiply ________ or _________, rather than force.

Answer 21

SPEED or DISTANCE

Question 22

If the wheel is driving the axle, there is a loss in mechanical advantage of speed because the driving belt is traveling seven times faster and farther than the driven belt on the axle.

Answer 22

Question 23

On simple machines it is POSSIBLE to gain both force and speed at the same time?

Answer 23

FALSE

Simple machine can only gain one or the other.

Either speed or force, but not both.

Question 24

Gears serve a four-fold purpose, what are they?

Answer 24

1. Change speed
2. Change direction
3. Transmit positive force
4. Increase or decrease force

Question 26

In an odd number of gears in a simple gear train, the driver and driven gear will rotate in opposote directions

Answer 26

FALSE

They will travel in the same direction

Question 27

Inclied Plane

1. The effort (E) acts parallel to the inclied surface or “slope”
2. The object offering resistance (R) is either pushed or pulled up the slope
3. The length of the slope is called the _____ _____ (__)?

Answer 27

EFFORT DISTANCE (ED)

Question 28

Most screw threads are said to have a definete number of threads per inch.

Answer 28

TRUE