WorksheetsBuoyancy, Energy, and Thermal Conduction Quiz
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Why can a steel ship float despite steel being much denser than water?
a)
Steel is lighter underwater
b)
The ship's shape and design displace water effectively
c)
Water becomes less dense when ships are present
d)
Steel becomes buoyant when in contact with water
2.
What is the density of steel compared to water?
a)
Steel is 7.8 times denser than water
b)
Steel is 1/7.8 times denser than water
c)
Steel and water have equal density
d)
Water is 7.8 times denser than steel
3.
What creates the upward force that supports a ship in water?
a)
Wind pressure
b)
Water resistance
c)
Buoyant force from displaced water
d)
Magnetic attraction
4.
Why are heavy containers placed at the bottom of a ship?
a)
To increase fuel efficiency
b)
To lower the center of gravity and improve stability
c)
To make loading easier
d)
To reduce water resistance
5.
What is the formula for Gravitational Potential Energy (GPE)?
a)
GPE = m × v × h
b)
GPE = m × g × h
c)
GPE = m × a × h
d)
GPE = m × f × h
6.
What is the value of gravitational acceleration (g)?
a)
9.8 m/s
b)
9.8 km/h
c)
9.8 cm/s
d)
9.8 m/s²
7.
What does the Energy Conservation Principle state?
a)
Energy can be created and destroyed
b)
Energy can only be transformed
c)
Energy is constant in an open system
d)
Energy decreases over time
8.
Which of these is NOT a non-solar energy resource?
a)
Geothermal energy
b)
Tidal energy
c)
Solar energy
d)
Nuclear energy
9.
How do electrons contribute to heat transfer in metals?
a)
By creating magnetic fields
b)
By carrying thermal energy
c)
By blocking heat movement
d)
By cooling the metal
10.
What happens to metal atoms when heated?
a)
They stop moving
b)
They become less dense
c)
They vibrate more intensely
d)
They shrink
11.
What determines a ship's stability?
a)
Ship color
b)
Wind speed
c)
Center of gravity
d)
Water temperature
12.
How does a ship's shape help it float?
a)
By making it lighter
b)
By displacing a large volume of water
c)
By reducing water friction
d)
By creating air pockets
13.
What happens when the weight of displaced water equals the ship's weight?
a)
The ship sinks
b)
The ship floats
c)
The ship tilts
d)
The water evaporates
14.
Which mechanism helps transfer heat in metals?
a)
Chemical reactions
b)
Electron movement
c)
Magnetic interactions
d)
Sound waves
15.
What prevents a ship from capsizing?
a)
Smooth water surface
b)
Lightweight containers
c)
Low center of gravity
d)
High wind speeds
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