Download Science gr.5 - Nawabegh Al-Riyadh International School

Nawabegh Al-Riyadh International School
Name:
Quarter: 4
Date:
Week # 16
Subject: Science
Grade: 5
Revision sheets
Q1. Answer the following questions.
1. How do forces affect motion?
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2. When might kinetic energy change into sound energy?
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3. How is heat transferred?
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4. Is there more energy in a 30 dB or 40 dB sound wave? Why?
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Q2. Define the following.
1. friction
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2. unbalanced forces
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3. law of conservation of energy
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4. temperature
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5. heat
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6. convection
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7. conduction
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8. sound wave
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Q3. Write “True” or “False”.
1. A rock at the top of a mountain does not have energy. _______________
2. Amplitude is the number of times an object vibrates per second. _______________
3. Heat is the kinetic energy in the vibrations of particles. _______________
4. Moving objects will not stop moving until acted upon by a balanced force.
_______________
5. Newton’s third law is also known as the law of inertia. _______________
6. Acceleration is the increase in speed over time. _______________
Q4. Write the scientific term that describes each sentence.
1. the use of force to move an object a certain distance or change an object
_____________
2. a change in an object’s position over time ______________
3. a group of objects from which a position or motion is measured
_______________________________
4. the ability of a material to transfer heat _____________________________
5. forces that act together on an object without changing its motion
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6. the initial push or pull of one object on another ______________________
7. the push or pull of a second object back on the object that started the push or pull
___________________
8. energy stored in the position or structure of an object ______________________
9. the transfer of heat through electromagnetic rays _________________
10. a space which contains little or no matter ___________________
Q5. Fill in the blanks.
1. ___________________ is the transfer of energy when a wave disappears into a
surface.
2. _________________ is most responsible for winds on Earth.
3. A(n) ______________ is a sound wave being reflected.
4. Sound waves need to travel through a _________________.
5. _________________ is a force that opposes motion.
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Q6. Match each term on the right to its meaning on the left. Write the letter on the
blank.
_______1. the location of an object
A. pitch
_______2. any push or pull by one object on another
B. momentum
_______3. the energy of a moving object
C. position
_______4. how high or low a sound is
D. acceleration
_______5. a substance through which a wave travels
E. kinetic energy
_______6. the speed and the direction of a moving object
F. force
_______7. the mass of an object multiplied by its velocity
G. medium
_______8. a change in velocity with respect to time
H. velocity
Q7. Choose the correct answer.
1. Which unit is used to describe an object’s acceleration?
a. m
b. m/s
c. (m/s)/s
2. Which describes how objects tend to resist changes in motion?
a. distance
b. inertia
c. speed
3. If unbalanced force acting on an object is increased, the object will ___________.
a. accelerate more
b. remain at constant velocity
c. remain still
4. If a car accelerates on a level road, it gains ______________ energy.
a. chemical
b. potential
c. kinetic
b. watt
c. newton
5. Which is a unit of work or energy?
a. joule
6. If the same force is applied to each object, which will have the greatest acceleration?
a.
b.
c.
7. According to the law of conservation of energy, when an object gains kinetic energy,
it loses ________________.
a. potential energy
b. power
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c. electricity
8. The graph below shows the speed of an object over a 12-second period.
At which time interval is the object’s acceleration zero?
a. 0 – 4
b. 4 – 7
c. 7 – 9
9. What will happen if a ball and a feather are released from the same height at the same
time?
a. the feather will hit the ground first
b. the ball will hit the ground first
c. both the objects will hit the ground at the same time
10. What would you need to do to decrease the force of attraction between Earth and an
object?
a. decrease the distance between Earth and the object
b. increase the mass of the object
c. increase the distance between Earth and the object
11. On Earth, which forces tend to slow down an object?
a. friction and drag
b. drag and inertia
c. gravity and drag
12. Which demonstrates balanced forces?
a. a kite falling to the ground
b. a bus accelerating around a curve
c. a bicycle leaning against a building
13. The loudness of a sound depends on the sound wave’s _______________.
a. frequency
b. pitch
c. amplitude
14. Which of the following is not a kind of kinetic encrgy?
a. magnetic energy
b. electricity
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c. sound energy