Science Revision Sheet Term 3
Answer Key
Grade 3
Scientific Methods
A- Describe which scientific tool best answer the question.
A. Stopwatch
B. measuring tape
C. balance
D. Measuring cup
E. Microscope
F. Hand lens
1) Becky only had enough money to buy 3 kilograms of mangoes at the supermarket.
What tool should she use? balance
2) Hala wanted to view the cells of an onion skin. What tool should she use?
Microscope
3) Sally needed to mix exactly 10 ml of food coloring with 2 liters of water. What tool
should she use? Measuring cup
4) Joud, while performing an experiment, had to make sure his sticks were between 6
and 7 centimeters long. What tool did he use? Measuring tape
5) Ms. Bliss wants to see who runs fastest in grade 3.Which tool she should be using?
Stop watch
6) Nabil was to see different rocks closely. What tool should he use to help?
Hand lens
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B- Answer the questions looking at this line graph showing weekly temperature .
1. Which day shows the temperature was highest? Monday
2. What is the temperature on Wednesday? 22 °C
3. On which day the temperature is lowest? Thursday
4. On which day temperature is 25°C ? Sunday
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C- Answer the question looking at this line graph showing monthly temperature.
1. Which 2 months the temperature was highest? July & August
2. What is the temperature in the month of July? 16 °C
3. Which 2 month the temperature is lowest? January & February
4. On which month temperature is 14°C ? June
Food chain:
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A- Make a food chain and show how energy moves. Match to the vocabulary words.
Predator
Plant
Decomposer
Grasshopper
Prey
Prey &
predator
Frog
Producer
Eagle
Mushroom
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B- Answer the following questions.
1- What is a producer? Give an example.
A living thing that makes its own food like plants.
2- What is a consumer? Give an example.
A living thing that eats other living things like lion.
3- What is an animal that eats both meat and plants is called? Explain
Omnivores; they have both flat and sharp teeth like bear.
4- What types of teeth herbivore have and what type of food they can eat?
They have flat teeth and they eat only plants like horse.
5- Name the animals that eat only meat? Explain
Carnivores; they have only sharp teeth like lion.
C- Write yes or no for each sentence
1- Can a lizard be a prey and predator? Yes
2- Is a lion a producer?
No
3- Do animals get energy from soil?
No
4- Is giraffe herbivore?
Yes
Forces
5
A- Choose the correct answer from the bracket.
1- Tina needs __________ force to push the heavy table. ( more / less)
2- Ross ____________ the ball to Sam.
( pull / Push)
3- Sad slipped on the watered floor, as there was little ______________.
( gravity / friction)
4- Tara ___________ the flower from the flower pot. ( pulled / Pushed)
5- Milk bottle slipped and fell on the floor because of _____________.
(magnetism /gravity)
6- Same magnet poles _______________. ( repel/ position)
7- Magnets can ____________ paper pins and nails. ( attract / repel )
8- Forces can change the ____________ of the ball. ( time / direction )
B- Name the 3 types of forces:
a. Magnetism
b. Gravity
c. Friction
C- Match the words in the box to their descriptions below. Write the correct
words in the space provided.
Repel
magnet 6
force
gravity
weight
friction
1- Gravity a pulling force between two objects, such as between
you and Earth.
2- Weight a measure of the amount of gravity between two objects.
3- Force a push or a pull.
4- Magnet is an object with magnetic force.
5- Repel to push away.
6- Friction a force that occurs when objects rub against each other.
D- Draw different type of forces:
magnetism
Push & pull
friction
gravity
Position & Motion
7
A- Match the words in the box to their descriptions below. Write the correct
words in the space provided.
straight line
position
ruler
motion
Speed
zigzag
Distance
1. Speed a description of how fast an object moves.
2. Position the location of an object.
3. Straight line a path with no turns.
4. Ruler an item used to measure distance.
5. Distance the amount of space between two places or objects.
6. Motion a change in position.
7. Zigzag a path with short, sharp turns from side to side.
B- Multiple choice question
1. What does a ruler measure?
a. Distance
b. speed c. motion
d. weight
2. How can you determine if an object is in motion?
a.
b.
c.
d.
The object will change its size.
The object will change its color
The object will change its shape
The object will change its position
3. How do you know if an object has changed its position?
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a.
b.
c.
d.
It is not visible anymore
It looks bigger
It is farther or closer from a reference point
It is on top of a reference point
4. What is the speed of an object that is at rest?
a.
b.
c.
d.
0 meters per minute
10 meters per minute
100 meters per minute
1000 meters per minute
5. What is speed?
a.
b.
c.
d.
It is how fast or slow something is moving
It is how much something is moving
An objects position
None of the above
6. Speed is the distance travelled in a ________
a.
b.
c.
d.
Unit mass
Unit time
Unit volume
Unit space
7. A box is sitting on the floor. When will the box move?
a. It will never move.
b. It will move when a force acts on it.
c. It will move when gravity pulls on it.
d. It will move when the lights are turned on.
C- Write the correct word in the space provided.
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1- A path with no turns is _____________________.( straight line / zigzag)
2- The amount of space between two places or objects is its ________________.
( zigzag / distance )
3- A change in position is _____________________. (magnet/ motion)
4- How fast an object moves is its ______________. ( speed / distance)
5- The location of an object tells it’s _________________. ( speed / position)
D- A dog and its owner were playing fetch. The owner is represented by the 0. Use
the following graph to answer questions 1 – 3
Position
B
E
C
A
D
F
0
Time
1. Which part of the graph shows where the dog is moving fastest?
A. A to B
B. B to C
C. C to D
D.
E to F
2. Which part of the graph shows where the dog is not moving?
A. A to B
B. B to C
C. D to E
E. E to F
3. The part from E to F shows the dog:
A.
B.
C.
D.
not moving.
running downhill.
returning to its owner.
slowing down.
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E- Write True/ false for each statement:
1- Motion is a change in position ( true / false )
2- Straight line, round and round, zigzag, and back and forth are all types of force. (
true / false)
3- Speed describes how quickly an object moves. ( true / false )
4- Distance can be measure by a pan balance. ( true / false)
5- Distances can be measured in meters or kilometers. ( true / false)
Light
A-
Choose the correct answer from the bracket.
1- Light can be absorbed or taken in, when it hits a ___________object. (white / black
)
2- Light is form of ______________. ( energy / speed )
3- Light travels in a __________________ path. ( zigzag / straight )
4- The natural source of light is a _________________. ( fire / doll )
5- Light bounces off an object, its _________________. ( refraction /reflection)
6- When light is blocked by an object ____________ is formed. ( transparent/ shadow
)
B-
Write true and false for each statement
a.
b.
c.
d.
C-
Light travels in circles
Dark space formed by an object is a shadow
Light is a form of energy
Mirror is a piece of glass that refracts light
___F___________
__T____________
___T___________
_______F______
Match the correct word with its definition. Write its words in the space
provided.
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refract
translucent
opaque
transparent
Absorbed
light
reflection
shadow
1- Refract is to pass light from one material to another.
2- Light is the form of energy that allows you to see objects.
3- Opaque is the type of material that block light from
passing through it.
4- Absorbed is when some or all light is taken in.
5- Reflection is when light bounces off an object.
6- Translucent are the type of materials that block some light and
allow some light through them.
7- Shadow a dark space formed by opaque materials that
block light from passing through them.
8- Transparent is a type of material that allows the light
to pass through it.
D-
Match the following
Reflect
Refract
E- Choose the correct option
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1-
Stopping light and holding it in is ________________
a.
b.
c.
d.
2-
Light travels away from the source in a ______________
a.
b.
c.
d.
3-
Refraction
Reflection
Absorption
Prism
Zigzag path
Straight path
Circular path
Up and down
Light can be absorbed or taken in, when it hits a _____________
a. White objects b. Blue objects
4-
The bending of light is ___________________
a.
b.
c.
d.
5-
c. Black objects
Refraction
Reflection
Absorption
Prism
John points a flashlight. The light hits an object and travels back toward John.
Which of the following objects did the light most likely strike?
a. A brick wall.
b. A large mirror.
c. A clear glass window.
e. A frosted glass window
6-
Light travels
a.
b.
c.
d.
___________
through walls
around objects
in straight lines
in a curvy pattern
Sound
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A- Choose a word from the box below that answers each question.
What am I?
Volume
pitch
vibration wave
a. Wave I am the way that sound travels out in all direction.
What am I?
b. Pitch I am how low / high a sound is. What am I?
c. Volume I am how loud a sound is. What am I?
d. Vibration I am a quick back and forth motion. What am I?
B- Choose the correct answer from the bracket.
a. The birds are singing in a __________ volume . ( soft / Loud )
b. I had to cover my ears, as at the airplane show there was
_____________volume. ( soft / Loud )
c. Sam playing with flute on ___________ pitch. ( low / high)
d. The drummer making __________ pitch with his drum. ( low / high)
C- Choose the correct option
1- How loud or soft a sound is?
a. Pitch
b. Volume c. Reflect d. Refract
2-What is how high or low a sound is?
a. Shadow b. volume
3-_____________
c. closed circuit
d. pitch
means to move quickly back and forth.
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a. Pitch
b. Vibrate
c. Reflect
d. Refract
4-The energy we can hear is?
a.
b.
c.
d.
potential energy
sound energy
open circuit
mechanical energy
5-How does sound carry energy from one point to another point?
a. Absorb
b. Volume
c. Waves
d. Reflect
6- The words pitch can be described as
a. Fast, slow
b. High, low
c. Big, small
d. Loud, soft
7- The loudness of a sound is called
a.
b.
c.
d.
The sound waves
The volume
The pitch
The amplitude
8- When you make sounds by plucking a rubber band, you make the rubber band move
back and forth very quickly. This movement is called
a.
b.
c.
d.
Loudness
Pitch
Vibration
Amplitude
9-How can you tell if something is making sound, even if we can’t hear it?
a.
b.
c.
d.
The item will disappear
The item will get larger
The item will be vibrating
The item will get smaller
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D- Write true / false for each statement.
1-
Sound is produced when an object moves back and forth quickly, or vibrates. T
2-
Sound travels slowest through a ( n) air. T
3-
A pitch is how high or low a sound is. T
4-
Volume is how soft / loud a sound is. T
Vocabulary words and there meanings:
 Balance/ scale: Measure the mass in grams/ kilograms.
 Hand lens: Used to produce a magnified image of an object.
 Measuring tape: Measure the length in centimeters/ meters.
 Microscope: See tiny things that cannot be seen with the eye.
 Measuring cup: Measure the volume in milliliters/ liters.
 Thermometer: Measure how hot or colds it is in degree Celsius/ Fahrenheit.
 Stop watch: Measure time in seconds or minutes.
 Producer: The living thing that makes its own food e.g plants
 Consumer: The living thing that depend on other living things for food.
 Prey: The animal that is hunted.
 Predators: The animal that hunts other animals for food.
 Carnivores: The animal that has sharp teeth and eats only meat.
 Omnivores: The animal that has both sharp and flat teeth.
It eats both plants and animals.
 Herbivores: The animal that have flat teeth and eat only plants.
 Push: Force applied to move the object away.
 Pull: Force applied to move the object towards you.
 Force: A pull or a push.
 Gravity: A pulling force between two objects, such as between you and Earth.
 Friction: A force that occurs when objects rub against each other.
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 Weight: A measure of the amount of gravity between two objects.
 Magnet: Is an object with magnetic force.
 Speed: How quickly an object moves.
 Distance: The amount of space between two places or objects.
 Motion: A change in position.
 Light: The form of energy that allows you to see objects.
 Absorb: When some or all light is taken in.
 Reflect: When light bounces off an object e.g mirror
 Opaque: The types of materials that block light from passing through them.
 Shadow: A dark space formed by opaque materials that block light from passing
through them.
 Transparent: The types of materials that allows the light to pass through them.
 Translucent: The types of materials that block some light and allow some light
through them.
 Refract: To pass light from one material to another.
 Sound: Is a form of energy.
 Vibrate: A quick back and forth motion.
 Volume: How soft /loud a sound is.
 Pitch: How low / high a sound is.
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