Question

complete each statement using a term or terms from the list below. write your answers in spaces provided.
carbon dioxide nine atmosphere
hydrosphere lithosphere planet
glaciers oxygen temperature
sun oceans

1. earth is a __________.
2. the planets circle the __________.
3. __________ planets move around the sun.
4. the solid part of the earth’s surface is called the __________.
5. the gases that surround our planet make up the __________.
6. the part of the earth that is water is the __________.
7. most of the fresh water of the earth is frozen in __________.
8. two important gases of the atmosphere are ________ and ________.
9. life exists on the earth because it has the proper mix of gases, reasonable __________, and a large amount of water.
10. salt water is found mostly in the __________.

matching
match each term in column a with its description in column b. write the correct letter in the space provided.
column a column b
______ 1. salt water a) makes up about 97% of the hydrosphere
______ 2. atmosphere b) water layer
______ 3. hydrosphere c) rocks, minerals, and soil
______ 4. lithosphere d) gases needed by living things
______ 5. oxygen and carbon dioxide e) mixture of gases

Explanation:

Completion Section Answers:

1. Earth is a planet. (Earth is a celestial body that orbits the sun, so "planet" fits.)
2. The planets circle the sun. (Planets in our solar system revolve around the sun.)
3. Nine planets move around the sun. (In the solar system, there are nine planets that orbit the sun.)
4. The solid part of the earth’s surface is called the lithosphere. (Lithosphere refers to the solid outer part of the Earth, including rocks, soil, etc.)
5. The gases that surround our planet make up the atmosphere. (Atmosphere is the layer of gases surrounding a planet.)
6. The part of the earth that is water is the hydrosphere. (Hydrosphere encompasses all the water on Earth, including oceans, lakes, rivers, etc.)
7. Most of the fresh water of the earth is frozen in glaciers. (Glaciers store a large portion of Earth's fresh water in frozen form.)
8. Two important gases of the atmosphere are carbon dioxide and oxygen. (These are essential gases in the atmosphere for life processes like photosynthesis and respiration.)
9. Life exists on the earth because it has the proper mix of gases, reasonable temperature, and a large amount of water. (Temperature is a key factor for life as it affects chemical reactions and the state of water.)
10. Salt water is found mostly in the oceans. (Oceans contain the majority of the Earth's salt water.)

Matching Section Answers:

1. salt water - a (Salt water, mainly in oceans, makes up about 97% of the hydrosphere.)
2. atmosphere - e (Atmosphere is a mixture of gases like nitrogen, oxygen, carbon dioxide, etc.)
3. hydrosphere - b (Hydrosphere is the layer of water on Earth, so it's the "water layer".)
4. lithosphere - c (Lithosphere consists of rocks, minerals, and soil, the solid part of Earth.)
5. oxygen and carbon dioxide - d (These gases are needed by living things; oxygen for respiration, carbon dioxide for photosynthesis.)

Answer:

Completion Section Answers:

1. Earth is a planet. (Earth is a celestial body that orbits the sun, so "planet" fits.)
2. The planets circle the sun. (Planets in our solar system revolve around the sun.)
3. Nine planets move around the sun. (In the solar system, there are nine planets that orbit the sun.)
4. The solid part of the earth’s surface is called the lithosphere. (Lithosphere refers to the solid outer part of the Earth, including rocks, soil, etc.)
5. The gases that surround our planet make up the atmosphere. (Atmosphere is the layer of gases surrounding a planet.)
6. The part of the earth that is water is the hydrosphere. (Hydrosphere encompasses all the water on Earth, including oceans, lakes, rivers, etc.)
7. Most of the fresh water of the earth is frozen in glaciers. (Glaciers store a large portion of Earth's fresh water in frozen form.)
8. Two important gases of the atmosphere are carbon dioxide and oxygen. (These are essential gases in the atmosphere for life processes like photosynthesis and respiration.)
9. Life exists on the earth because it has the proper mix of gases, reasonable temperature, and a large amount of water. (Temperature is a key factor for life as it affects chemical reactions and the state of water.)
10. Salt water is found mostly in the oceans. (Oceans contain the majority of the Earth's salt water.)

Matching Section Answers:

1. salt water - a (Salt water, mainly in oceans, makes up about 97% of the hydrosphere.)
2. atmosphere - e (Atmosphere is a mixture of gases like nitrogen, oxygen, carbon dioxide, etc.)
3. hydrosphere - b (Hydrosphere is the layer of water on Earth, so it's the "water layer".)
4. lithosphere - c (Lithosphere consists of rocks, minerals, and soil, the solid part of Earth.)
5. oxygen and carbon dioxide - d (These gases are needed by living things; oxygen for respiration, carbon dioxide for photosynthesis.)