WorksheetsPS-NTNHS UNIT TEST
Total questions: 51
Worksheet time: 38mins
It is the distance from the vertex to the principal focus
It is the colored spots of light that developed due to the refraction of light through ice crystals
It is an imaginary line is drawn perpendicular to the reflecting surface
It is an angle formed by an incoming ray with the normal
It is a phenomenon by which the incident light falling on the surface is sent back or bouncing back into the same medium
It is an astronomical model in which the Earth and planets revolve around the Sun.
The straight-line path traversed by light is called ___.
Any surface that is smooth enough to produce a regular reflection of light incident upon it
It is a simple drawing that shows how light moves.
It helps us see the path of light rays from a light source (like a lamp or the Sun) to an object, our eyes, or a screen
It is the mixing or overlapping of two or more waves that meet at the same point
______:rough surfaces:: Specular reflection: smooth surfaces
Reflection of light: bouncing back of light:: __________: bending of light
Astrology: __________:: Astronomy : 13 zodiac constellations
Waning: increasing:: Waxing:____________________
_________________: Ptolemaic system:: Nicholas Copernicus:Copernican system
Heliocentric: sun-centered:: Geocentric:_______________
.__________: ray strikes surface::Reflected ray: ray rebounds from the surface
Solar Eclipse: annular:: Lunar Eclipse:__________
_________: small circular orbits:: Deferent: big circular orbit
Convex mirror: bulges outward:: Concave mirror:_____________
What is the mathematical expression of the Law of Reflection?
𝜃𝑟 = 𝜃𝑖
𝜃𝑟 < 𝜃𝑖
𝜃𝑟 > 𝜃𝑖
𝑟 + 𝜃𝑖 = 90°
What were the Greeks known for besides being great philosophers?
They were only skilled traders and sailors.
They were only good artists and poets.
They were also great scientists and mathematicians.
They were only famous soldiers and leaders
What type of reflection happens when light strikes a rough surface and is scattered in many directions?
Regular reflection
Specular reflection
Diffuse reflection
Transparent reflection
When does the summer solstice occur in the Northern Hemisphere?
In March
In June
In September
In December
Why is an image formed when light hits a mirror?
Because of absorption
Because of reflection
Because of refraction
Because of transmission
What does the Law of Reflection state about the angles of light?
The angle of incidence is equal to the angle of reflection.
The angle of incidence is smaller than the refracted angle.
The reflected ray and incident ray are opposite in direction.
The refracted ray equals the reflected angle.
Which of the following is an example of a reflecting device?
Lens
Mirror
Prism
Glass
What can best explain the unusual orbit of Mercury?
Sun’s warping of space-time
gravity
turbulation
distribution
Which of the following shows the correct sequence of rainbow formation?
Refract – Reflect – Refract
Reflect – Refract – Refract
Reflect – Reflect – Refract
Refract – Refract – Reflect
Which of the following is the shape of the Earth according to ancient Greeks?
cylinder
flat disc
octagon
sphere
Which is viewed as distortion of space-time?
mass
time
gravity
force
According to Erastothenes’ computations, what is the circumference of the Earth?
250, 000 stadia
500 stadia
7.2 stadia
40,00 stadia
How does General Relativity view gravity?
Gravity warps space and time
Gravity warps mass.
Gravity is the curvature of space-time.
Gravity is a force.
Which BEST explains why the Earth is not disk-shaped?
Stars are viewed differently when traveling north and south.
The shadow cast by the Earth during a lunar eclipse is circular.
The shadows cast in two different cities during a solstice differed in length.
The only shape that cast a circular shadow in whatever direction is a sphere
The following describes a mirage as a light phenomenon except:
If a driver looks down at the roadway at a very low angle, light from objects above the roadway will follow a curved path causing a mirage
A mirage makes it seem there is a puddle of water on the road that is causing you to see objects located above the road
Mirages form a circular arc around the anti-solar point, which is located at the shadow of your head.
An optical phenomenon that results from the refraction of light through a non-uniform medium is called a mirage.
Which of the following is an annual motion?
Moonrise
Sunset
Eastward rise of stars
Vernal equinox
What principle is responsible when we see yellow to red skies in the early morning or late afternoon?
Moonrise
diffraction
interference
scattering
What planet in the solar system is most affected by the sun’s warping of space-time?
Mercury
Venus
Earth
Mars
Which aided Eratosthenes in measuring the Earth’s circumference?
The appearance of stars differs as when traveling north and south.
The shadows cast within the Syene and Alexandria during the solstice.
The sphere is the only shape that casts a circular shadow in whatever direction.
The shadow casts by the Earth during a lunar eclipse is circular
Blue skies occur during the day due to _____________.
Diffraction
Mie scattering
Rayleigh scattering
Tyndall Effect
It was believed to be in fixed position in the sky. However, when the Greeks traveled to places nearer the equator, like Egypt, they noticed that it is closer to the horizon.
earth
moon
north star
solstice
White light goes through a filter that can absorb blue light; what color of light can pass through as perceived by an observer?
Blue
Green
Red
Yellow
It is an apparent change in the movement of the planet through the sky. It is not real that the planet does not physically start moving backwards in its orbit. It just appears to do so because of the relative positions of the planet and Earth and how they are moving around the Sun.
Annual motion
Retrograde motion
Diurnal motion
Rotation of the Earth
Where should the object be positioned to have a smaller and inverted image in a concave mirror?
At the focus
Beyond the center of curvature
At the center of curvature
Between the curvature and focus
Johannes Kepler in best known for the___________.
Invention of the first telescope
Laws of planetary motion
Principle of stellar parallax
.Sun-centered Universe
What can be said of the image formed in the bulging reflecting surface of a spoon?
Virtual upright, and larger than the object
Virtual, inverted and larger than the object
Virtual, upright and smaller than the object
Virtual, inverted, and smaller than the object
As one of his three axioms of planetary motion, _________ demonstrated that the planets move in elliptical orbits around the sun.
Galileo Galilei
Nicolaus Copernicus
Tycho Brahe
Johannes Kepler
When you see a “wet spot” mirage on the road in front of you, what are you most likely seeing?
sky
water
hot air
fragment of your imagination
Which of the following is a statement of Kepler’s first Law?
Planets move in perfect circles with the Sun at the center
Planets move along an elliptical path with the Sun at the center
Planets move along an elliptical path with the Sun at one of the foci
Planets move along an elliptical path with the Earth at one of the foci
Why is the spectrum of light separated into its components of color when white light is directed to a prism?
The different colors in the white light bend away from the normal line at different angles when entering prism ingestion.
The different colors in the white light bend towards the normal line at different angles when entering prism.
The different colors in the white light bend away from the normal at same speed to each other when entering prism
The different colors in the white light bend towards the normal at same speed to each other when entering prism
The following are the laws formulated by Kepler using Brahe’s data and observations, EXCEPT_______
