Understanding Homeostasis
Science
Year 8
15 questions
~30 mins
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A worksheet covering Homeostasis for Year 8 students.
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Understanding Homeostasis
Subject: ScienceGrade: Year 8
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Untitled Worksheet
Grade Year 8
A
Questions
Answer all questions. Show your working where appropriate.
1.
What is homeostasis?
[1 mark]2.
Which of the following is an example of homeostasis?
[1 mark]ARegulation of body temperature
BGrowth of a plant
CPhotosynthesis
DCell division
3.
True or False: Homeostasis only occurs in animals.
[1 mark]4.
Match the following terms to their definitions:
[3 marks]1. Thermoregulation
2. Osmoregulation
3. Glucoregulation
AThe maintenance of steady levels of glucose in the blood.
BThe process of maintaining core body temperature.
CThe control of water and salt concentrations in the body.
5.
Explain how sweating helps to regulate body temperature.
[2 marks]6.
True or False: The kidneys play a role in maintaining homeostasis.
[1 mark]7.
Describe the role of the liver in homeostasis.
[2 marks]8.
Order the steps in the process of thermoregulation:
[2 marks]1
2
3
4
5
9.
Fill in the blank: The _____ system is crucial for sending signals to maintain homeostasis.
[1 mark]10.
Calculate the change in body temperature if a person loses 500 ml of sweat. Use the formula: Change in temperature = Energy lost / (Mass x Specific heat capacity). Assume specific heat capacity is 4.18 J/g°C and energy lost per ml of sweat is 2.4 J.
[3 marks]11.
Discuss the importance of homeostasis in maintaining healthy body function. Include at least two systems involved in homeostasis.
[6 marks]12.
Multiple choice question: How does the body respond to an increase in blood glucose levels?
[1 mark]AInsulin is released to lower glucose levels.
BGlucagon is released to increase glucose levels.
CAdrenaline is released to increase heart rate.
DDopamine is released to enhance mood.
13.
Explain how negative feedback mechanisms contribute to homeostasis.
[3 marks]14.
Multiple choice question: Which organ is primarily responsible for osmoregulation?
[1 mark]AKidneys
BLiver
CHeart
DLungs
15.
True or False: Homeostasis can be disrupted by external environmental factors.
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- Created
- 12/30/2025
- Updated
- 12/30/2025
- Type
- worksheet