NEW
Font size
WorksheetsGrade 8 Science 1st Quarter Exam
Total questions: 30
Worksheet time: 15mins
Sound is received in your ear through
the vibration of matter such as air, water, or other material
energy waves that can go through empty space
vibrations of space
The word for when light bends when passing from one medium to another?
Radiation
Refraction
Reflection
Opaque
What type of materials do NOT let light travel through them?
transparent
transluscent
opaque
What occurs when light hits and object and bounces off the surface?
Refraction
Reflection
Color
Gamma Ray
Which object MAKES light?
The sun
Mirrors
Eyes
The Moon
A rainbow occurs because of
Reflection
Refraction
Which of the following visible colors has the shortest Wavelength?
Violet
Green
Yellow
Red
Number 1 represents the
Wavelength (corresponds to rate/frequency of the wave)
Amplitude (corresponds to energy/volume)
The dark parts of the slinky represent
Transverse Waves
Compression waves
Diamonds Sparkle because
Light gets stuck inside the diamond and can't get out
Light bounces off the inside and back out to your eye
They are expensive and rare
They are carbon based and made over millions of years
Which part of your eyes changes shape to make objects focus, just like glasses?
Iris
Lens
Cornea
Optic Nerve
Which of the following visible colors has the longest Wavelength?
Purple
Green
Yellow
Red
Echo's happen when
Waves bring so much energy that that they go through the surface
Waves bounce off a material and travel back towards the source
Waves travel so far that they lose all their energy
White light will refract into colors of the rainbow when it interacts with a:
Prism
Block of wood
Mirror
Metal table
Light travels in a line.
straight
slanting
curved
Sound is a form of .
energy
force
shock waves
liquid
During a thunderstorm we can see lightning before we can hear thunder. Give reason?
light travels faster than sound .
thunder travels faster than sound
sound travels faster than lightning.
sound travels faster than light.
Molecules are in constant __________.
hibernation
motion
collision
temperature change
Which of these best shows the particles in a solid?
The one on the left.
The one in the middle.
The one on the right.
When a substance heats up, the particles move faster, and the substance __________.
melts
contracts
turns into a gas
expands
When you measure temperature, what are you measuring?
What state of matter something is.
The potential energy of the molecules.
If you have Covid.
The kinetic energy (speed) of the molecules.
What's the freezing point of water on the Celsius scale?
320
1000
00
2120
What's the boiling point of water on the Celsius scale?
1000
2120
00
320
Heat transfer through direct contact is called _______________.
Conduction
Convection
Radiation
An accident waiting to happen.
What phase change occurs when an ice cube turns to water?
Freezing
Condensation
Vaporization
Melting
What phase change occurs when water vapor cools and forms water droplets?
Vaporization
Melting
Condensation
Freezing
What phase change occurs when water boils and turns from a liquid to a gas?
Freezing
Melting
Condensation
Vaporization
What phase change occurs when a liquid cools and turns into a solid?
Freezing
Vaporization
Melting
Condensation
What form of heat transfer does this picture show?
(Boiling eggs in water)
Conduction
Breakfast
Radiation
Convection
What is the meaning of temperature?
The amount of water in a container
The size of a shadow.
The measure of how cold or hot something is.
The amount of heat contained
