Grade 11 Earth Science: Human Body Challenge Practice Worksheet

Human Body Challenge Practice

Grade 11 Earth Science Human Body Challenge Practice Medium 10 Questions 10 Views

Classroom Worksheet

Grade 11 Earth Science: Human Body Challenge Practice Worksheet

Human Body Challenge Practice

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Grade: Grade 11

Subject: Earth Science

Topic: Human Body

Time: 20 Minutes

Difficulty: Medium

Questions: 10

Instructions:
Read each question carefully and answer in complete sentences where needed. Show your reasoning for calculation and explanation questions. Questions increase in difficulty from basic recall to more advanced application.

Skills Practiced:

Human Body
Earth Science
Critical Thinking
Problem Solving

1Question

What is the main function of the skeletal system in the human body?

2Question

Name the organ system that transports oxygen, nutrients, hormones, and wastes throughout the body.

3Question

Which organ system works with the circulatory system to bring oxygen into the body and remove carbon dioxide?

4Question

Explain why muscles need oxygen to function properly during exercise.

5Question

Describe one way the skin helps maintain homeostasis in the human body.

6Question

A student runs up a hill and starts breathing faster. Explain how the respiratory and circulatory systems work together during this activity.

7Question

Why does the heart rate increase during physical activity?

8Question

A person becomes dehydrated on a hot day. Explain two effects dehydration can have on the human body.

9Question

How does the digestive system support the function of the body’s cells?

10Question

A runner finishes a race and continues breathing heavily for several minutes. Explain the body processes involved and why recovery takes time.

Answer Key

#	Answer
1	The skeletal system provides support, protection for organs, and a framework that allows movement.
2	The circulatory system.
3	The respiratory system.
4	Muscles need oxygen to release energy from glucose during cellular respiration, which provides the energy required for muscle contraction.
5	The skin helps maintain homeostasis by regulating body temperature, such as through sweating when the body is too warm.
6	The respiratory system brings in more oxygen and removes extra carbon dioxide, while the circulatory system carries the oxygen to muscle cells and transports carbon dioxide back to the lungs.
7	The heart rate increases to pump more oxygen-rich blood and nutrients to active muscles and to remove carbon dioxide and other wastes more quickly.
8	Dehydration can reduce blood volume, making it harder for the circulatory system to transport materials, and it can reduce the body's ability to cool itself through sweating.
9	The digestive system breaks food into small molecules that can be absorbed into the bloodstream and delivered to cells for energy, growth, and repair.
10	After intense exercise, the body needs extra oxygen to restore normal conditions, remove excess carbon dioxide, and help process lactic acid produced by muscles. Recovery takes time because the respiratory, circulatory, and muscular systems are returning to resting levels.