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Worksheets2022 Science Review Test
Total questions: 18
Worksheet time: 7mins
What is buoyancy?
The ability to sink in water.
It works the same way as gravity.
The ability to float in water.
A downward force.
Choose all the true facts about buoyancy.
It is an upward force.
It acts the opposite of gravity.
It doesn't work on a submerged object.
It works on a submerged object.
What is Archimedes' principle?
The buoyant force acting on a submerged object > weight of the fluid the object displaces
The buoyant force acting on a submerged object < weight of the fluid the object displaces
The buoyant force acting on a submerged object = weight of the fluid the object displaces
How do you calculate density?
d = "m" x "v"
d = "m" + "v"
d = "m" / "v"
d = "v" / "m"
Choose all the options which sinks.
Weight is greater than buoyant force.
Object decreases its mass and becomes less dense than the fluid.
Object decreases its volume and becomes denser than the fluid.
Fluid is denser than objects.
What does pressure equal?
M= Mass
V= Volume
A= Area
F= Force
m/v
A/F
F/A
v/m
Name two types of force
Pressure forces, action-at-a-distance force
contact forces, pressure force
Contact forces, action-at-a-distance force
gravity, contact forces
Identify the direction of the normal force
Perpendicular or away from the surface.
Diagonal to the right
Downward
If the density of water is 1000 kg/m3, what is the pressure due to the water at the bottom of a swimming pool 3m deep?
G= 10N/Kg
30 0000 Pa
3 000 Pa
30 000Pa
None of above
Water pressure is generated by the weight of _____ and the more _____ above the higher pressure.
(a)
Does pressure depend on the shape or container in fluids?
TRUE
FALSE
Air pressure rises as you ________.
go down
rise up
Identify the direction of the tension force.
To the object
Away from the object
Downwards
Upwards
A hose causes a force of 8000N from water over an area of 0.5m by 0.5m. Calculate the pressure. (Answer in Newtons.)
(a)
What is the element with an atomic number of 17?
Potassium
Carbon
Chlorine
Phosphorus
What are isotopes?
Mix of many atoms.
Atoms with different numbers of electrons
Atoms with different number of neutrons.
How fast does visible light travel?
3,000 km/s
30,000 km/s
300,000 km/s
3000,000 km/s
Which of these has the correct order types of Electromagnetic waves from highest to lowest amounts of energy?
Gamma-ray, Visible light, radio waves, microwaves
Visible light, radio waves, microwaves, gamma-ray
Gamma-ray, visible light, microwaves, radio waves
Microwaves, gamma rays, radio waves, Visible light
