Revision Worksheet grade 4 science

Grade 4  

Choose the right word :
Ecosystem          habitat                  population                          carnivore             omnivore            producer             energy pyramid                                food chain                           food web
1._____________________________________________ diagram that shows the amount that flows from producers to consumer
2.__________________________________________ system of overlapping food chains in which the flow of energy branches out in many directions
3._________________________________________ transfer of energy from one organism to another by eating and being eaten
4._____________________________________eats only other animals.
5._____________________________________ makes its own food
6.___________________________________ eats plants and other animals
7.________________________________the area or plants where an organism lives.
8._____________________________ all the living and nonliving things in an environment and the many ways they interact.
9.___________________________ all of the members of one species.

Tell if each sentence is true or false. Explain your choice. Give example.
 10. A population is all of the plants and animals that live within an ecosystem.
This statement is _____false_________________ because _all members of one species__  

11. A lion’s habitat contains shrubs, trees, and water.
This statement ___true_______because__habitat contains living and nonliving  things that an organism needs to survive.  

12. An herbivore may eat grass
This statement is true because ________they are animals which eat plants

13. in which type of an ecosystem is the ground beneath the surface frozen all the year:
A. desert                                                             C. tundra
B. prairie                                                              D. wetland

answer; C tundra

14. What kind of habitat do you think an animal with long, thick fur would most likely live in?
_________________cold_____________________________________________________________



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Grade 4                Subject: Science               Revision              .               
  
Name:______________________________________________       
A.      Choose the right letter next to the answer  you think is correct for each multiple-choice question:
1.       Which is one way that scientists classify plants?
A. Chloroplast
B. photosynthesis
C. reproduction
D. chlorophyll

answer; c

2.       Which adaptation would be most useful to an animal that eats nectar from plants?
A. Fins
B. Wings
C. Fast legs
D. Short beak
Answer: b

3.       Which is an example of instinct?
A.      A spider spins webs
B.      A child speaks Chinese.
C.      A sea lion balances a ball on its nose.
D.      A dog stays away from skunks.

answer: 
a
4  .Which is a waste product of photosynthesis?
A. Oxygen
B. carbon dioxide
C. sugar
D. Sunlight

5.       What is the function of the sepals of a flower?
A.      Make pollen
B.      Make petals
C.      Make egg cell
D.      Protect flower buds
answer:d

6.       Which is not an example of an animal behavior?
A.      Staying away from predators
B.      Opening doors that have sensors
C.      Knowing when to migrate
D.      Having white feathers.
Page 1
B.     

Stimulus               insect                    migration            characteristics                   invertebrates
                advantage          inherit                   adaptation         hibernation       
environment                         chlorophyll       chloroplasts      Photosynthesis                 germinate                                                                                           

Write the word next to the description it matches.




1.       _____________________A behavior that is inherited
2.       _____________________ the movement between habitats
3.       _____________________ something that causes a reaction in a living thing.
4.       _____________________to receive characteristic that can help an individual compete in its environment.
5.       ___________________ animals without backbones
6.       _____________________ the qualities that an organism has
7.       _____________________a state of inactivity that helps some animals survive cold temperatures
8.       _____________________a physical feature or behavior that helps an organism survive in its environment
9.       _____________________everything that surrounds a living thing
10.   _____________________characteristic that can help an individual compete in its environment.
11.   _____________________ tiny structure in plant cells where photosynthesis occurs
12.   ____________________ the substance in plants that makes their parts green and captures energy from sunlight
13.   ____________________ the process of making sugar.
14.   ____________________ to start to grow

C.      True or False. Write T(true)  if the sentence is correct and F(false) if the sentence is not correct
1.____ Scientists classify plants based on their height and how they reproduce.
2.____ There are more animals that do not have backbones than there are that do have backbones.
3.____ colorful petals can be helpful to a flowering plant for pollination
4.____ A plant's waste products pass into the ground through its roots.


Page 2

D.      Circle the correct answer:
1. What is one characteristics that might give a hawk an advantage over other hawks?
A. better eyesight           B. dark color                       C. long nails
2. What is could be a characteristic that you may have inherited from your parents?
A.  two eyes on one side.             B. eye color        C. spikes
3. What characteristic helps the prickly pear cactus survive in a dry environment
a. waxy coating                 B. Zebra               C. long tails

E. Answer the following questions
1. What are two characteristics scientists might use to classify a plant?_________________________________________________________________________________________________________________________________________________________________________________________________________2. What are the roles of a plant's roots, stems, and leaves in the process of making food?________________________________________________________________________________________________________________________________________________________________________________________________________________________________.3.How do the wings of an eagle help the eagle survive?____________________________________________________________________________________________________________________________________________________.4. What does it mean to inherit a characteristic?___________________________________________________________________________________________________________________________________________________.5. Write two characteristic that human may inherit?___________________________________________________________________________________________________________________________________________________.




Page 3


Revision Worksheet 3 .  

Grade 4           Science                       Revision Worksheet.
Name:_______________________________________ Class____

Answer the following:

1. What might happen if a lion cub gets separated from its parents shortly after birth? Page 122
 __Answer: The cub might not learn ways to get food or survive_________________________________________________________________

2. What does it mean to inherit characteristics? Give example.
_________Answer: To inherit a characteristic is to receive a trait from a parent._Eye color is an example_____________________________________________________________________________________________________________________________________________

 3.   How is an instinct different from a learned behavior?
 _____
 __________.

4. Which is not an example of an animal behavior?
A. staying away from predators
B. opening doors that have sensors
C. knowing when to migrate
D. having white feathers

Answer: B

5. Which characteristic shows a change due to stimulus in the environment?
A. A zebra's stripes have a different pattern than its parents.
B. A pea plant grows white flower.
C. A turtle pulls its head into its shell.
D. A flounder can change its color.
Answer: C


6. Giraffes with longer necks have an advantage in (page:116)
A. competition
B. adaptation
C. nutrition
D. protection

Answer: A

7. What characteristic helps the prickly pear cactus survive in a dry environment? Page: 114
___Answer: The waxy coating on the cactus pads helps the cactus survive in a dry environment._______________________________________________________________________________________________________________________________________

8. List three characteristics that the peacock flounder inherited. Page 115
_Answer:___Flat body,eye on one side, and the ability to change color  ____________________________________________________

9. What characteristics Mendel's pea plant showed? Page 113
_Answer:____stems, leaves,flowers,pods,peas ________________________________________________________________

10. The hairs on a stinging nettle release a chemical that irritate skin, explain how this adaptation might help the plant? Page 110
__Answer: this adaptation of harmful chemicals protects the plant from being eaten_______________________________________________________________________________

11.What are the two characteristics of the peacock flounder that help it survive? Page 115
__Answer: the ability to change color and ability to hide _________________________________________________________________

12. What are three of the inherited characteristics of the prickly pear cactus? Page 114
_________Answer: sharp spines, paddle-shaped pads, and a waxy coating_________________________________________

13. Explain in your own words what an instinct is? Page 120
_____Answer: An instinct is a behavior that an animal is born with ________________________________________________________________

14. What two kinds of instinctive behaviors help some animals survive seasonal changes? Page 121
____Answer: _Migration and hibernation ____________________________________________________________

15. How does hibernation help some animals survive? Page 121
____Hibernation helps animals survive in cold temperatures by conserving their energy.______________________________________________________________________________________________________________________________________

16. Describe how the dark moth's coloring hives them an advantage over the light-color moths. Page 117
_____Answer: The advantage of darker color helped the moths to avoid being eaten by birds ________________________________________________________________

17. What kinds of adaptations might protect some animals from being eaten? Page 108
_______________________________________________________________________________________Answer: Bad taste, smelly spray, bright color.___________________________________________________


Use the following words in the correct sentence:
Adaptation      hibernation     environment               characteristics                        advantage       inherit             stimulus           instinct                        migration

1______instinct___________________a behavior that is inherited
2. _____migration____________________ the movement between habitats
3 ______stimulus __________ something that causes a reaction in a living things
4. ________inherit __________________ to receive  characteristic from an organisms
5.___________advantage _______________a characteristics that can help an individual compete in its environment
6. __________characteristics________________ the qualities that an organism has
7._________hibernation__________________a state of inactivity that helps some animals survive cold temperatures
8. ________adaptation____________________a physical feature or behavior that helps an organism survive in its environment
9.________environment______________________everything that surround a living thing

Underline the behavior that is a response to a stimulus in the environment.
A thirsty elephant looks for water
A fish moves to deeper water as the temperature of a lake changes.

Match the following
__4__ a.  Zebra  characteristics                                    1. Two living things need the same resource
__3__b. Cactus                                                                   2. Has sticky substance attracting insect
_2___c. Bee orchids                                                         3. Has a waxy coating on its stem
_5___d. learned behavior                                              4. Have black and white stripes and manes
_1___e. Competition                                                       5. As result or practice or training

Some reasons animals need to adapt because:
A. Food, protection from predators and survive in severe weather
B. the pea plant had different characteristics
C. in order to compete for sunlight

Answer: A

The characteristics that human being inherits from his parents are:
A. Waxy coating
B. Eye color, hair color, and skin color
C. Humans are awesome
Answer: B

Do humans inherit all characteristics from their parents? Explain
___Answer: No . Some characteristics are unique to each individual, such as type of hair.__________________________________________________________________________________________________________________________________________________.
How does changing color help an organism survive?
___If an animal can change  colors, it can blend into is surroundings so that it is less vivble to predators.__________________________________________________________________________________________________________________________________________________
Sometimes people with tall parents do not grow to be as tall as their parents. Why might this happen?
____Answer: There might be people of different heights in the family.__________________________________________________________________________________________________________________________________________________

What is the plural of the term stimulus?
a. stimuli
b. stimul
c. stimulus
Answer: A
How are instinct and learned behaviors different?
_Answer:____Instincts are behaviors that an animal is born with. Learned behaviors are formed from training or experiences
 _________________________________________________________________________________________________________________________________________________













Worksheet 2.

Fish breathe:Gills.they are covered by scales, they are cold blooded, lay egg
Amphibians breathe with lungs or gills. They are covered with a smooth skin.they cold blooded, hatch egg.
Reptiles: covered with scales. They have lungs and breath air. Reptiles are cold blooded
Birds: covered with feathers. have lungs. They are warm blooded. lay eggs.
Mammals: have hair or fur, breath from lungs. warm blooded- give birth.

2. What is meant to classify?
Sort things out or sort object or living things according to their properties.

3. What characteristics of plants are used to classify them?
How they transport nutrients and reproduce.

4. What are conifers?
plants with cones.

5. What are vascular and non vascular plants?
Vascular plants are plants with tubelike structure
Non-vascular plants are plants that pass water and nutrients from cell to cell.

6. Give two examples that reproduce by producing spores?
Mosses and ferns.

7. What are vertebrates? Name the groups of vertebrates which are classified into five groups?
Vertebrate are animals with backbone. These are fish, reptiles, amphibian, birds, and mammals.

8. What are invertebrate? give example
Invertebrate are animals without backbones such as crabs.

9.What are arthropods? give examples
Arthropods are the largest group of invertebrates.such as shrimps

Lesson 2.
1. Which is the male part of the flower? what do they produce?
Stamen are the male part of the flower it produces pollen.

2, Which is the female part of the flower? What does it contain?
 Pistil is the female part of the flower containing ovary producing eggs.

3. What is pollination?
The movement of pollen from stamen to pistil.

4. What is fertilization?
The process where the sperm cell and egg cell combine.

5. What does a seed require to germinate?
Water, Oxygen and the right temperature.

From lesson 3.
What is photosynthesis?
The process in which plant make sugar.

Where does photosynthesis takes place?
It takes place in the chloroplast.

How do a roots, stems, and leaf help plants in producing plants?
Roots grow away from the stem in search for water and nutrients. Water and nutrients from the soil, stems have waxy covering to protect the stem from drying out and in addition the stems have the ability to hold the plant.The leaves also catch the sunlight to make food,

Give a reason:
A black footed cat and house cat cannot produce offspring that can also produce offspring?
Answer:  They are different species and only organisms in the same species can produce offspring that can also produce offspring.

An amphibian's reptile's body temperature changes when it moves from hot temperature to cold temperature to cold temperature.
An amphibian's are cold blooded and their body temperature depends on their surrounding.






Worksheet- Revision                            Science                                                                                         
 A. Choose the right answer
Circle the letter of the sentence which has right answer
1.Inquiry is:
A. The process of showing examples of scientist searching for answers.
B. The process of asking questions and searching for answers.
C. The process of looking at something. 

The answer: is B

2.  Two ways scientist find answers to their questions:
A. study other scientist work, conduct experiments, or make their own observation
B. Encyclopedias, books, magazines, the internet, and scientific journals.
C. Noticing the investigation before it starts.

The answer is :A

3. The three example of reference materials that scientist use  are
A.  Observation, Investigation, Inquiry.
B. Research, Experiment, Investigation
C. Internet, books, journals

The Answer is: C

4. Why is it important for scientist to keep track of the information they find in reference materials?
A. Other scientist can then easily find the material.
B.  So that they work on their own.
C. They noticed that the rocks were made of different materials.

The answer is A

5. A graduated cylinder is used to measure:
A:temperature
B: mass
C: volume
D: weight

The answer is: C

B. Match the following  columns by writing the correct letter in front of the write answer:
 
1 _C___ Books, Magazines and the internet                           A.  Inquiry
2.__D___A careful way of looking for something                       B.  Tool
3.__A___ the process of asking questions                                C . reference material                  
4.__B___ is an object or device used to perform a task            D. investigation                                                           
5. __F__ tells what the content that follow is about                    E. caption
6.___E__tells specific information about a picture                      F. heading


  
C. Answer the following questions.
1. What sense would you use to observe a cave? How would you use these senses?
  
Sense of touch to feel walls of the cave and use sense of sight to see around 
___________________________________________________________________________
 

2. Ask Questions: what would you like to know about land features in your country? Write a question.
 _ ___How have land features changed over the years?_________

3. Why might some reference materials be better than others?
 Some reference materials might have more recent information 

4. Infer: why might scientist repeat experiment?
  ______
Results from experiments might match or be different from previous experiment.___
___________________________________________________________________________

5. Which tool you use to look at the moon?C
A. a microscope
B. a hand lens
C. a telescope
D. a thermometer.

6:  read the following and answer the question below.
Measurement Long Ago
Long ago people measured by using familiar objects. They used a forearm or a foot to measurements, they might have used the width of a man's thumb.

What does the heading in the passage above tell you?
_________Measurement Long Ago______ ___________________________________________________________________________________

What can some tools help you measure?
  Volume, temperature, length, distance, and mass
 ____________________________________________________________________________

Why is it important to make precise measurements?
  It helps scientists who share more information know what other scientist have observed.
____________________________________________________________________________

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