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WorksheetsSCIENCE 10 | 2nd Quarter Summative Exam
Total questions: 80
Worksheet time: 2hrs 59mins
Which does not illustrate kinetic energy?
It is expressed in Joule.
It depends upon the objects’ mass and speed.
It is the energy an object possesses due to its motion.
It depends upon the objects’ mass and objects’ height.
A roller coaster whose average speed is 32 m/s is at the top of a 72m hill and weighs 966N. At the top of the hill the coaster car has ___________________ energy.
only kinetic energy
only potential energy
mostly kinetic energy
both kinetic and potential energy
What is the potential energy of a 3kg ball that is on the ground?
0 J
3 J
9.8 J
29.4 J
Which statement does not illustrate power?
A farmer plowing the rice field all day.
A Siberian husky pulling a sled all day.
A principal sitting on a chair while observing several classes all day.
A teacher encoding his power point presentation in his laptop all day.
Who has the most power?
Ms Criza who encodes her observation tools using 12000J of work in 20 minutes.
Sir Pau who studies his 5 lessons for the next classes in 15 minutes.
Mrs Punzalan who used 50N force to inoculate mushrooms at a speed of 2m/s.
Mrs Masalunga who watches her learners while taking their quiz in 30 minutes.
A 100 N force is applied to move an object a horizontal distance of 5 meters at constant speed in 10 seconds. How much power is done?
50J
50W
500J
500W
Which statement illustrates work done?
A weightlifter holds a barbell above her head.
A teacher applies a force to a wall and becomes exhausted.
A rolling marble hits a note card and moves it across a table.
A waiter carries a tray full of meals across a dining room at a constant speed.
A weightlifter holds a 100 kg barbell above her head. Is work done?
Yes because there is a force applied to the barbell and the force causes a displacement of the barbell.
Yes because there is an upward force applied to the barbell and the barbell moves vertically.
No because no displacement occurred.
No because there is no force applied.
What is the energy possessed by the cart?
potential energy
kinetic energy
mostly potential
mostly kinetic
If the mass of the cart is 15kg, how much is the potential energy of the cart?
0J
1.2J
6J
58.8J
If the mass of the cart is 8.12kg, what is the kinetic energy of the cart?
0J
1.2J
6J
58.8J
How will you describe the energy at Point A?
mostly potential energy
mostly kinetic energy
losing PE, gaining KE
losing KE, gaining PE
A 735kg empty roller coaster is at its starting point whose distance from the ground is 150m. After a while, it moves at point B whose distance from the ground is 120m. What is the kinetic energy of the coaster at point B?
1,080,450J
864,360J
216,090J
0J
What is the total mechanical energy of the object?
100J
75J
50J
25J
Which state of matter do sounds travel fastest in?
Solid
Liquid
Gas
Plasma
Why does sound travel faster in solids than in liquids or gases.
They are harder.
The particles are closer together.
Solids have more energy.
Gases fill their container.
Why does sound travel faster in solids than in liquids or gases.
They are harder.
Solids are more dense.
Solids have more energy.
Gases fill their container.
(a) occurs when two or more wave overlap and combine to form one wave.
An echo is a sound wave that is absorbed by a soft material.
TRUE
FALSE
(a) technology is used to create medical images and it is based on sound waves with frequencies so high that human ears cannot hear.
The speed of sound depends on the type of matter, or (a) , through which sound wave travels
The strength of a reflected sound wave depends on the reflecting (a) .
A sound in a bare room can be (a) because the sound waves are reflected oof the walls, the floor, and the ceiling.
A (a) wall will absorb sound better than a smooth wall will.
The use of reflected soundwaves to find objects is called (a) .
SONAR means (a)
In destructive interference, waves combine to form a wave with a (a) amplitude.
When constructive interference occurs, waves overlap and combine to form a wave with a (a) amplitude or height.
(a) is a type of electronic echolocation that uses echoes to locate objects underwater.
If the jet is going fast enough, it breaks through the barrier. The jet moves at (a) speeds - speeds faster than the speed of sound.
(a) happens when a sound wave matches the natural frequency of an object and causes the object to vibrate.
The distance from one crest to the next crest in a wave is
wavelength
crest
trough
amplitude
All waves carry ________ as they travel from one place to another.
matter
space
energy
water
A wave that can travel through matter and empty space is a:
electromagnetic wave
longitudinal wavy
transverse wave
