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year 8 Science Homework Week 5
By Naomi Arthur
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Last updated over 4 years ago
12 questions
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Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
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Question 8
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Question 9
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Question 10
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Question 11
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Question 12
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Which of the following is the correct definition of hydraulics?
Systems where liquids are used to multiply and transfer forces
Systems where solids are used to multiply and transfer forces
Systems where liquids are used to multiply and transfer pressure
The equation that links force, pressure and are is…
force = pressure/area
area = pressure/force
pressure = force/area
What happens to pressure with increasing depth of a liquid?
Decreases
Increases
Stays the same
Which statements are correct?
Liquids cannot be compressed.
Pressure increases as you go deeper in a liquid
p = f x a
Pressure is measured in NM2
Imagine a balloon…
If the pressure is kept constant and the temperature is increased, what will happen to the volume?
Increase
Decrease
Stay the same
Imagine a balloon…
If the pressure is kept constant and the temperature is decreased, what will happen to the volume?
increase
decrease
stay the same
Imagine a balloon…
If the volume is reduced, what happens to the pressure?
increase
decrease
stay the same
Imagine a balloon…
If the volume is increased what will happen to the pressure?
Increase
decrease
stay the same
As the temperature increases, the pressure ...........
increases
decreases
stays the same
A box weighs 100 N. It exerts a pressure of 25 Pa on a table. What is the area of the box in contact with the table?
4 mm2
4 cm2
4 m2
4 km2
A box weighs 20 N. It exerts a pressure of 2 Pa on a table. What is the area of the box in contact with the table?
10 cm2
0.1 m2
10 m2
40 m2
A skier weighs 600 N and exerts a pressure of 2,500 Pa on the snow. What is the area of the skis?
0.12 m2
0.24 m2
1.2 m2
4.2 m2