Worksheets2nd Qtr. Science 8 Exam Review Part 1
Total questions: 38
Worksheet time: 39mins
Which wave source, analog vs digital, is not affected by interference?
(a)
When two waves have the same wavelength and amplitude sequence, state the vocabulary term for what happens when they interact in the same medium? (hint 1: two words; hint 2: effect is an increase in volume)
(a)
The science unit for measuring the frequency of a wavelength is known as a (a) ? (hint: also a rental car company)
Waves that require a medium are known as
Medium waves
Mechanical waves
Air waves
Heat waves
A wave with a 30 m wavelength and 20 Hz frequency will have what wave speed in meters per second?
60
600
1.5
2/3
Which of the following is the speed of a wave traveling with a wavelength λ, frequency f, and period T?
v=fλ
v=λf
v=λ⋅f
v=f⋅T
v=Tf
How can a change in medium affect a sound wave?
There is no change.
The amplitude and wavelength will decrease when passing through a more dense medium.
Sound doesn't pass through mediums.
The amplitude and wavelength will increase as it passes through a more dense medium.
An example of a cell phone wave looks like
An advantage a digital wave has over an analog wave is
It can be perfectly duplicated.
It is cheaper to make.
It is longer and conserves energy.
It doesn't cause cancer.
Which type of music recording has the reputation for sounding more LIVE with "hissing" sound from original performances?
Digital recordings
Binary data transfer
Analog recordings
Telegram recordings
During a school project on planetary science, students are asked to model Earth's axial tilt. What is the correct angle in degrees they should use for Earth's axis?
23.5 degrees
45 degrees
90 degrees
180 degrees
When the Northern Hemisphere (NH) is perfectly tilted toward the Sun, we here in the NH will experience the ___?
Winter Solstice
Summer Solstice
Spring Solstice
Fall Solstice
What does "equinox" mean?
It’s when there’s the least amount of nighttime in one day.
It’s when there’s the least amount of daytime in one day.
It’s when there’s equal amounts of daytime and nighttime in one day.
It's when there's 11 hours of daylight and 13 hours of darkness in one day.
Michael learned that the movement of Earth in the solar system causes changes that can be seen on the
planet. Which change could be seen on Earth in the time it takes Earth to rotate once on its axis?
day becoming night
winter changing to spring
January changing to February
a new moon becoming a full moon
When the Sun and Moon are aligned earthlings the moon phase is known as a (a) ?
IS THIS A HIGH PITCH OR LOW PITCH?
HIGH PITCH
LOW PITCH
IS THIS A HIGH PITCH OR LOW PITCH?
HIGH PITCH
LOW PITCH
Is a sound wave is spread out the vibration is...
fast
slow
sad
happy
If a sound has waves that are squished together the vibration is...
fast
slow
medium
not happy
How does Earth’s tilt on it’s axis cause seasons?
It doesn’t.
Earth’s tilt causes seasons because when Earth is tilted on its axis toward the Sun, there is summer, and when it is tilted away from the Sun, it is winter.
Earth is not tilted.
Earth’s tilt causes seasons because when Earth is tilted on its axis toward the Sun, there is winter, and when it is tilted away from the Sun, it is summer.
How does Moon's tilt on it’s axis cause seasons?
It doesn’t.
Moon's tilt causes seasons because when Moon is tilted on its axis toward the Sun, there is summer, and when it is tilted away from the Sun, it is winter.
Moon is not tilted.
Moon's tilt causes seasons because when Moon is tilted on its axis toward the Sun, there is winter, and when it is tilted away from the Sun, it is summer.
