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1
The electromagnetic spectrum is made up of:
Different colors.
A wide range of electromagnetic waves.
Six main types of waves.
Electricity and magnetism.
2
Used to carry radio and television signals.
Ultraviolet waves
Light waves
Gamma waves
Radio waves
3
IT is a line of light that shines from a source of light.
Beam of light
Reflected light
4
When a ray of light reflects off a surface, the angle of incident is equal to the angle of reflection.
Law of Reflection
Beam of light
The scientific method
5
A mirror is a piece of special glass in which you can see your reflection.
False
True
6
What is the wavelength of a radio wave?
It is shorter than 30 cm
10 cm long
It is longer than 30 cm
Less than 30 cm
7
It is a space between two lines or surfaces that meet at one point, measured in degrees.
Angle
Normal
8
What is a diffused reflection?
Light that strikes a surface.
The reflection of light into a random direction.
9
For you to be able to see, cells in this part of the eye absorbs light to the brain via the optic nerve.
Retina
Cornea
Ciliary muscles
Iris
10
It is the top or outside part of something.
Layer.
Nucleus.
Surface.
11
It is an instrument that uses mirrors. It allows you to observe over, around or through an object.
Microscope
Telescope
Periscope
12
It is an object that emits electromagnetic radiation such as light.
Nonluminous object.
Source of light.
Opaque object.
13
Properties used to describe light:
Speed, wavelength, and frequency.
Wavelength, Transluscent and Speed.
Transparent, transluscent, and opaque.
Speed, wavelength, and Refraction.
14
What is an incident ray?
It is the light in red color.
It is a ray of light that strikes on a surface.
15
1. What is an image?
It is the way other people think someone or something is.
It is a drawing or paint.
16
Which is the color of light?
It is black.
It is a combination of all colors in the colorspectrum.
It is purple because of the UV rays.
17
What does a scientist must do to test a hypothesis?
Gather data through an investigation.
Conduct a controlled experiment.
18
Is the type of surface that is harsh or uneven, not shiny.
Smooth
Rough
19
Things that could affect a person´s perception of the intensity of light:
The size of the lens.
Distance to the light source and sensitivity of the person´s eyes.
The batery´s charge of the flashlight.
The amount of waves in the space.
20
It is a space between two lines or surfaces that meet at one point, it is measured in degrees.
Flat surface
Mirror
Rough surface
Angle
21
The electromagnetic spectrum consists of:
Seven main types of waves
Five main types of waves
Low and high frequency waves
Waves
22
You use it to cook some of your food.
Microwaves
Infrared
X-rays
Light
23
The only type of electromagnetic wave that you can see.
Gamma
Ultraviolet
Light
Radio
24
A ray in physics is:
The reflecting light from a mirror´s surface.
It is a narrow beam oflight, heat or energy.
25
How are sources of light classified?
Rough and smooth surfaces.
Natural and artificial sources.
26
Kind of wave that has slightly shorter wavelengths than ultraviolet waves.
Gamma
X-rays
Light
Infrared
27
Waves that can be dangerous because they carry enough energy to cause your skin to burn.
X-rays
Infrared
Ultraviolet
Microwaves
28
Electromagnetic waves have different:
Radio waves.
Waves.
Types of light.
Wavelengths, frequency, and energy.
