WorksheetsSound
Total questions: 20
Worksheet time: 1hrs 2mins
Complete the sentences using these words:
- potential
- mass
- height
- acceleration
1) changed
2) potential
3) acceleration
4) mass
5) height
1) changed
2) acceleration
3) mass
4) height
5) potential
1) changed
2) height
3) mass
4) potential
5) acceleration
1) changed
2) mass
3) potential
4) height
5) acceleration
The Law of Universal Gravitation describes an existing attraction, or gravitational force among ______ in the universe which decreases when the distance between the objects increases.
What's the missing word?
objects
materials
houses
places
Match the words to the pictures
1. C
2. A
3. B
1. B
2. C
3. A
1. B
2. A
3. C
1. A
2. B
3. C
What does make astronauts appear to float in space?
none of the above
ocean currents
freefalling
escape velocity
What are ocean currents?
none of the above
They're a kind of ocean in the space
They're currents in the ocean
They're determined by the rise and fall of tides in the ocean.
The speed necessary to break away from the gravitational force of an object is called ______
escape velocity
ocean currents
freefalling
gravity
Match the type of energy to the picture
1. b
2. a
3. a
1. a
2. b
3. a
1. b
2. a
3. b
1. b
2. b
3. a
Choose the correct explanation for the situation.
Jordan will float because his mass has changed. It's gravitational force will not pull him toward the Earth's center, because the moon's gravitational force will pull him towards it's center
Jordan will feel like he's floating, but not because his mass has changed. It'll be because due to Eart's larger mass, it's gravitational force will continue pulling him toward the Earth's center, while the moon's gravitational force will be pulling him towards the moon's center
Jordan will faint because he can't go to the moon
none of the above
Calculate the gravitational potential energy (PEgrav) if the Jordan´s height from the ground id 5.6m
Bike's mass= 11.63kg
Total mass= 70kg + 11.63kg = 81.63kg
PEgrav= 81.63kg x 9.8 x 5.6 m= 4,479.85 Joules
Bike's mass= 15.60kg
Total mass= 70kg + 15.60kg = 85.60kg
PEgrav= 85.60kg x 9.8 x 5.6 m= 4,697 Joules
Bike's mass= 12.50kg
Total mass= 70kg + 12.50kg + 82.50kg
PEgrav= 82.50kg x 9.8 x 6.6 m= 5,336 Joules
Bike's mass= 11.63kg
Total mass= 70kg + 11.63kg = 81.10kg
PEgrav= 81.10kg x 9.8 x 5.6 m= 4,483.85 Joules
Read and complete
1- Energy
2- matter
3- non-renewable
4- renewable
5- potential
6- PEgrav
7- mass
8- gravity
9- escape velocity
10- freefalling
1- Energy
2- matter
3- renewable
4- non-renewable
5- PEgrav
6- potential
7- gravity
8- mass
9- freefalling
10- escape velocity
1- Energy
2- potential
3- non-renewable
4- renewable
5- gravity
6- PEgrav
7- matter
8- freefalling
9- escap velocity
10- mass
1- Energy
2- escape velocity
3- PEgrav
4- renewable
5- non-renewable
6- potential
7- gravity
8- matter
9- freefalling
10- mass
Sound is a wave, or disturbance, produced by the vibration of _______ in a substance.
particles
waves
gas
objects
Sound is a form of kinetic ______ in which energy is transferred through the longitudinal sound wave.
have
gas
waves
energy
Sound waves propagate, or travel, through a solid, liquid or _____ medium, such as air or water.
particles
objects
gas
energy
The speed at which sound _____ travel depends on the properties of the medium.
none of the above
objects
waves
particles
The ______ of sound waves produces an echo in large, open spaces that lack small objects, such as in an empty room.
speed
shape
waves
reflection
What are the properties of sound waves?
none of the above
wavelength, frequency and amplitude.
waves, sounds and speed
shape, height and waves
What is wavelength?
the height between the crests of two waves
the distance of a complete wave
the speed between the crests of two waves
none of the above
What is frequency?
It's the height of the objects
none of the above
The number of sound waves
The number of waves that pass a point in one second
Which unit is used to measure loudness of sound?
Hertz (Hz)
decibels (dB)
none
meter
What is an ultrasound?
it's any sound with an exact frequency of 20,000 Hz
none of the above
it's any sound with any frequency of 20,000 Hz or more
it's the frequency of 10,000 Hz or more
