chapter 2 flashcards

Question 1

Galaxy in which we live?

Answer 1

Milk Way

Question 2

Sun and the group of bodies that revolve around it?

Answer 2

Solar System

Question 3

Major bodies that orbit a star?

Answer 3

planets

Question 4

Body whose great size attracts other objects through gravity?

Answer 4

moons

Question 5

Smaller outer planet that has a rocky core?

Answer 5

Uranus

Question 6

Smaller objects that orbit a planet?

Answer 6

pluto

Question 7

One of only two planets in the solar system that does not have a moon?

Answer 7

Mercury

Question 8

Third planet from the sun and the fifth largest of the nine planets?

Answer 8

earth

Question 9

Type of energy that reaches earth as light and heat?

Answer 9

sun

Question 10

One complete spin of earth on its axis, which takes 24 hours to complete?

Answer 10

rotation

Question 11

A _____ is a group of different parts that interact to form a whole

Answer 11

system

Question 12

Geographers divide the earth system into ______ major parts, called hemispheres

Answer 12

four

Question 13

The envelope of gases that surrounds earth is the called the _____

Answer 13

atmosphere

Question 14

The ______ is the solid crust of earth, which includes land and soil

Answer 14

litosphere

Question 15

The hydrosphere, earth’s water, covers approximately _____ percent of earth’s surface

Answer 15

71

Question 16

Much of earth’s water in the form of ice is locked in _____ in the polar regions

Answer 16

glaciers

Question 17

The _____ is the part of the earth system that includes all life forms, both plants and animals

Answer 17

biosphere

Question 18

The part of the earth system that protects earth from the sun’s harmful radiation is the ______

Answer 18

stratosphere

Question 19

Earth’s four spheres make up the _____, which indicates all the biological, chemical, and physical conditions that interact and affect life

Answer 19

environment

Question 20

Individuals and groups sometimes try to influence governmental decisions on environmental issues, a practice called

Answer 20

lobbying