Upco's Earth Science Book- Chapter 1

Front 1

In order to make observatons, an observer must use_____________________.

Back 1

The senses

Front 2

A pebble found in a dry field has round edges. A professor says that the pebble has been rolled over and over in a flowing stream. His comment can best be classified as ________________________.

Back 2

An inference

Front 3

The general purpose of a scientific system of classification is to ________________________.

Back 3

organize for easier study

Front 4

Which property was probably used to classify the substances below?

A B C

Water Aluminum Water Vapor

Gasoline Ice Air

Alcohol Iron Oxygen

Back 4

Physical State (phase)

Front 5

Which descriptive term illustrates an inference?

Transparent, younger, smooth, bitter

Back 5

Younger

Front 6

A student recorded the times of three successive high tides at on location as:

9:12 am, 9:38 pm, 10:04 am

What is the approximate time of the next tide?

Back 6

10:30 pm

Front 7

Which word does not belong?

Gram, centimeter, meter, pound

Back 7

pound

Front 8

Density is usually expressed in___________.

Back 8

g/cc

cc= cubic cm

Front 9

The three basic dimensional qualities are:

Back 9

time, length, and mass

Front 10

Two measurements that are often used interchangeably are:

Back 10

weight and mass

Front 11

Only ____________ of an ice cube is above water.

Back 11

1/10

Front 12

An object with the same density as water would ___________________________.

Back 12

sit in the center of the liquid

Front 13

At which temperature does water have its greatest density?

Back 13

4 °C (liquid form)

Front 14

What is the density of the object?

Mass: 120 g

Volume: 4 cm x 3 cm x 5 cm = ? cc

Back 14

2.0 g/cc

Front 15

If an object were cut in half, the density would ______________________.

Back 15

Remain the same

Front 16

As a volume of air expands due to heating, the density of the air will ______________________.

Back 16

decrease

Front 17

At which phase (state) do most earth materials have their highest density?

Back 17

solid

Front 18

Calculate the density of the irregular object:

Volume: 3.0 mL

Mass: 12 g

Back 18

4.0 g/mL

Front 19

What always happens when a change occurs?

Back 19

The properties of the system are altered

Front 20

The boundary between two regions of change is called a(n) _____________________.

Back 20

interface

Front 21

In a static change, as the independent variable ___________, the dependent variable ______________________.

Back 21

increases, remains the same.

Front 22

In a cyclic change, as there is a __________________.

Back 22

repeating pattern

Front 23

In an indirect or inverse change, as the independent variable __________, the dependent variable _________.

Back 23

Increases, decreases

Front 24

In a direct change, both variables __________.

Back 24

Increase