Download Science gr.6 - Nawabegh Al-Riyadh International School

Nawabegh Al-Riyadh International School
Name:
Quarter: 4
Date:
Week # 16
Subject: Science
Grade: 6
Revision sheets
Q1. Choose the correct answer.
1. When an object moves through a liquid or gas, what type of force opposes its
motion?
a. continuous
b. thrust
c. drag
2. Which is not an example of organic compound found in the human body?
a. protein
b. water
c. lipid
3. Friction between a skateboard wheel and the surface produces _________________.
a. kinetic energy
b. heat energy
c. potential energy
4. As the amplitude of a sound wave increases, its_______________________.
a. pitch increases
b. volume decreases
c. volume increases
5. Which type of force is applied when a moving tennis ball is hit by a tennis racket?
a. lift
b. momentary
c. continuous
6. Proteins are composed of substances called____________________.
a. lipids
b. carbohydrates
c. amino acids
7. Which measures the average kinetic energy of the molecules in a substance?
a. temperature
b. velocity
c. calories
8. When a force is constantly applied to an object, it is called a __________________
force.
a. lift
b. momentary
c. continuous
9. If you know the speed and direction of an object, what could you find?
a. momentum
b. velocity
c. apparent motion
10.What is the name of the upward force that allows a plane to fly?
a. lift
b. drag
c. potential
11.Newton's third law of motion states that for every action force there is an equal and
opposite ____________________.
a. reaction force
b. reaction mass
c. reaction acceleration
12.A change in an object's position is called__________________.
a. motion
b. velocity
c. acceleration
13.Which type of organic compounds can store and release more energy than other
organic compounds?
b. carbohydrates
b. lipids
c. proteins
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Q2. Write “True” or “False”.
1. Apparent motion is the way something appears, or seems, to move. __________
2. A tuning fork produces compressional waves in the air. __________
3. Energy transformation takes place only when kinetic energy is converted into
potential energy. __________
4. To calculate the speed, you have to multiply the distance with the time. __________
5. Weight is the downward force of Earth's gravity on all objects. __________
6. Energy can be stored and released in many ways. __________
7. To find an object's velocity, you must know the speed and direction of the moving
object. __________
8. The metric unit which measures force is the Newton. __________
9. Troughs are the highest points of a wave. __________
10.Power is expressed in joules per second. _________
11.Potential energy can be converted into kinetic energy. __________
12.To calculate work, multiply the force by the distance. _________
13.There are three forms of energy. __________
Q3. Match each term on the right to its meaning on the left. Write the letter on the
blank.
________1. a molded material that contains carbon
and can retain its shape
A. distance
________2. the length between two places
B. potential energy
________3. the mass of an object multiplied by its velocity
C. plastic
________4. the state of being without weight
D. momentum
________5. the energy stored in an object or a material
E. weightlessness
Q4. Write a scientific term that describes each sentence.
1. a wave that moves matter back and forth as it travels through a medium
______________________
2. a physical law that states that an object's acceleration depends on the object's mass
and the amount of net force applied to it _____________________
3. the bouncing of a wave off an object, changing its direction of travel
______________________
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4. a force that opposes the motion of an object in contact with a surface
_____________________
5. how fast an object's position changes with time at any given moment ____________
6. the ability to do work ______________
Q5. Fill in the blanks.
1. ___________________ is the chemical building block of all known living things.
2. A physical law stating that the planets, the stars, and the Sun, all exert gravitational
forces is the law of ______________________________.
3. _________________ is the location of an object compared with things around it.
4. A change in velocity of an object over time is called ____________________.
5. The kinetic heat energy in a substance is called ____________________.
6. ________________ is the height of a wave from its trough or crest to its midpoint.
7. The law of conservation of energy states that energy may change form but it cannot
be ________________ or ________________.
8. Doppler Effect is the change in a sound's _____________ if its source or recipient is
in motion.
9. Most plastics are __________________, or made by people.
10. To calculate power, you must divide work by_________________.
11.An organic compound that is rich in energy and often stored in your body as fat is a
________________.
12.Sound waves cannot travel through __________________.
13.____________________ is a natural gas that is used to heat homes.
14.When a hair dryer is turned on, the electrical energy is transformed into
__________________ energy.
15.Sugars and starches are ______________________.
16.The units of work done is newton meters, which is also called as______________.
17.Another name for energy of motion is ______________________.
18.Volume is measured in units called ________________.
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Q6. Draw and label a compressional wave.
Q7. Define the following.
1. force
______________________________________________________________________
______________________________________________________________________
2. newton's first law of motion
______________________________________________________________________
______________________________________________________________________
3. transverse wave
______________________________________________________________________
______________________________________________________________________
4. compression
______________________________________________________________________
______________________________________________________________________
5. power
______________________________________________________________________
______________________________________________________________________
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6. kinetic energy
______________________________________________________________________
______________________________________________________________________
7. rarefaction
______________________________________________________________________
______________________________________________________________________
8. velocity
______________________________________________________________________
______________________________________________________________________
Q8. Answer the following questions.
1. How do waves cause sound?
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
2. How are forces and motion related?
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
3. How are carbon compounds important?
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
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4. What causes motion to change?
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
5. What are work, energy, and power?
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
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