Science Study Guide

Question 1

Gram

Answer 1

a metric unit of mass

Question 2

Liter

Answer 2

a metric unit of capacity

Question 3

Velocity

Answer 3

Velocity is a physical vector quantity; both magnitude and direction are needed to find it

Question 4

Volume

Answer 4

the amount of space that a substance or object occupies

Question 5

Density

Answer 5

the degree of compactness of a substance

Question 6

Acceleration

Answer 6

increase in the rate or speed of something

Question 7

Gravity

Answer 7

the force that attracts a body toward the center of the earth

Question 8

Force

Answer 8

strength or energy as an attribute of physical action or movement

Question 9

Mass

Answer 9

a large amount of material.

Question 10

Inertia

Answer 10

a tendency to do nothing or to remain unchanged

Question 11

Balance scale

Answer 11

A device for weighing

Question 12

Friction

Answer 12

the resistance that one surface or object encounters when moving over another.

Question 13

Independent variable

Answer 13

a variable (often denoted by x ) whose variation does not depend on that of another.

Question 14

Dependent variable

Answer 14

a variable (often denoted by y ) whose value depends on that of another.

Question 15

Constant variable

Answer 15

Controlled variable

Question 16

X axis

Answer 16

a variable (often denoted by y ) whose value depends on that of another.

Question 17

Y axis

Answer 17

the secondary or vertical axis of a system of coordinates, points along which have a value of zero for all other coordinates.

Question 18

Horizontal

Answer 18

A askew line

Question 19

Vertical

Answer 19

A straight line

Question 20

Bar graph

Answer 20

A Bar Graph (also called Bar Chart) is a graphical display of data using bars of different heights.

Question 21

Pie chart

Answer 21

A pie chart (or a circle chart) is a circular statistical graphic which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice (and consequently its central angle and area), is proportional to the quantity it represents.

Question 22

Newton’s first law

Answer 22

An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Question 23

Newton’s 2nd law

Answer 23

Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

Question 24

Newton’s 3rd law

Answer 24

For every action there is an equal and opposite re-action.