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WorksheetsSummative-Science 10-Q2
Total questions: 20
Worksheet time: 10mins
What is the speed of light in a vacuum?
3 × 10⁵ m/s
3 × 10⁶ m/s
3 × 10⁷ m/s
3 × 10⁸ m/s
What are the three basic parts of an electric generator?
battery, armature, and DC power supply
stator, rotor, and commutator
commutator, stator, and motor shaft
armature, brushes, and stator
Which of the following principles explains how an electric motor works?
electromagnetism
magnetism
electrolysis
magnetic force
What is the mathematical relationship between frequency and wavelength?
Directly Proportional
Inversely Proportional
Both
Nothing
What type of mirror do dentists usually use to see clearly the images of our teeth?
Plane Mirror
Convex Mirror
Concave Mirror
Mirror
How are electricity and magnetism related?
When an electric current pass through a wire there is an electrical field.
They are not related.
When an electric current pass through a wire there is spark.
When an electric current pass through a wire a magnetic field is formed
When an object is placed between F and the mirror of a concave mirror, the image formed is:
Virtual and larger
Real and smaller
Virtual and smaller
Real and larger
What type of image does a convex mirror always form, regardless of object position?
Virtual and upright
Real and inverted
Virtual and inverted
Real and upright
What kind of image is produced by a plane mirror?
Virtual, upright
Virtual, inverted
Real, inverted
Real, upright
In a ray diagram, where do all rays parallel to the principal axis converge in a concave mirror?
At the "C"
Beyond the "C"
At the "F"
Between "C" and "F"
What do all electromagnetic waves have in common?
They require a medium to travel
They are longitudinal waves
They travel at the same speed in a vacuum
They have the same frequency
What is the function of a commutator in a simple electric motor?
Measures voltage
Generates current
Stores energy
Reverses current direction
Which of the following always produces a real and inverted image (except when the object is at the focus)?
Plane Mirror
Concave MIrror
Convex Mirror
Mirror
What type of mirror would be best suited for a street corner to help drivers see oncoming cars from around the bend?
Plane Mirror
Concave Mirror
Convex Mirror
Mirror
Which electromagnetic wave has the lowest frequency?
Gamma Rays
X-Rays
Radio Waves
Microwaves
Radio waves have higher energy than X-rays.
True
False
Electric motors convert mechanical energy into electrical energy.
True
False
A plane mirror forms images that are always real and inverted.
True
False
A convex mirror can form a real image if the object is placed far enough away.
True
False
X-rays can pass through soft tissues but are absorbed by bones.
True
False
