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Below are some of the latest 4th grade Science Semester Exam Questions with selected answers edited by Minh Khue Law. We invite readers to refer to them to be able to best prepare for the upcoming exam.

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4th grade Science 2nd Semester Exam – Question 1

Circle the letter in front of the correct answer or follow the requirements of the question

Question 1: Which of the following factors cause air pollution? M1 – 0.5đ

You are viewing the following article: Grade 4 Science 2nd Semester Exam with answers for the academic year 2022

A. Untreated smoke, dust, toxic gas, noise, garbage.B. Noise and waste have been treated hygienically.C. Plant trees, use improved stoves to reduce smoke.D. Go outside, urinate in the right place.

Question 2: When does an object make a sound? M1 – 0.5đ

A. When bending objects. B. When an object is placed next to another object.C. When making objects vibrate.D. When throwing objects.

Question 3: Sound can propagate through what substances? M1 – 0.5đ

A. Liquids, gases. B. Gases, solids.C. Gases, liquids, solids.D. Porous, solid.

Question 4: What will the tree do if it is not watered? M1 – 0.5đ

A. Plants will be transported to water.B. The tree will grow well.C. The tree will wilt and die.D. The tree will wait for the rain.

Question 5: Fill in the appropriate temperature in the dot: M2 -1đ

The temperature of boiling water is: ……………………..The temperature of a healthy person is about: ……………………. …………..

Question 6: Match the crossword in column A with the crossword in column B so that it is appropriate: M2 -1đ

Question 7: Correct write D, false write S: Why do we feel colder when it’s cold, putting our hands on a bronze object than putting our hands on a wooden object? M3 -1d

☐ Copper objects have a lower temperature than wooden objects.☐ Copper gives off more cold heat to our hands than wood.☐ Copper conducts heat better than wood, so more heat is transferred from our hands to copper than to wood. Therefore, we feel colder when touching copper objects.☐ Copper has a cold substance, wood has no cold substance.

Question 8: Why do people have to aerate the water in the aquarium? M3 -1d

A. To provide oxygen to fish.C. To provide nitrogen gas for fish.B. To provide food for fish.D. To supply carbon dioxide to fish.

Question 9: Choose the appropriate words in brackets to fill in the blanks: (health, heating, food, natural beauty) M2 -1d

Sunlight helps us to have ……………………. (1) , …………………… (2) and heated. Thanks to light, we perceive all ………….. (3) .

Question 10: Please give at least 3 notes when reading and writing to protect your eyes. M3 -1d

Question 11: Fill in the blanks with suitable words: (M1) (1 point)

In the process of photosynthesis plants absorb gas…………..and give out gas…………..

Question 12: In your opinion, what can each of us do to help reduce climate change and limit global warming? M4 -1đ

Answers to the 4th grade Science 2nd semester exam questions

4th grade Science 2nd Semester Exam – Question 2

Question 1 (4 points): Circle the letter in front of the correct answer

a. Which component in the air is most important for human respiration?

A. Nitrogen gas

B. Carbon dioxide

C. Oxygen gas

D. quite watery

b. When do objects make sound?

A. When the object is compressed

B. When there is vibration of objects

C. When the object is stretched

D. the above ideas are all wrong

c. What is the body temperature of a healthy person?

A. 0oC

B. 38oC

C. 37oC

D. 40oC

d. Which of the following is not a property of air?

A. Colorless.

B. There is no definite shape.

C. Odorless, tasteless.

D. Flowing from high to low.

Question 2 (1 point): Find and fill in the missing information in the appropriate dot (….) to complete the animal metabolism diagram:

Question 3 (1 point): Write the letter T in front of the correct answer, the letter S in the wrong answer

….Water is one of the components that make up the plant body.

…..Water can replace other minerals that plants need.

….Thanks to water, plant roots absorb dissolved minerals.

…..Thanks to water, plants can resist pests.

Question 4 (1 point): Find and fill in the blanks with appropriate words (…) in the following lines.

Animals need enough air, ……………………, …………………….. and ……..

…………. then exist, …………………….. usually

PART B: DISCUSSION (3 points)

Question 1 (1 point): What do plants need to live?

Question 2 (1 point): Please list 2 things you should do to avoid the damage caused by light to your eyes when reading books, watching TV?

Question 3 (1 point): What is a food chain? Draw a diagram to illustrate a food chain.

Answers to the 4th grade science exam at the end of term 2

Question 1 (4 points): Circle the letter in front of the correct answer

a. Which component in the air is most important for human respiration?

Option C. Oxygen gas

b. When do objects make sound?

option B. When there is vibration of objects

c. What is the body temperature of a healthy person?

C. 37oC . option

d. Which of the following is not a property of air?

option D. Flow from high to low.

Question 2 (1 point):

The following can be filled in:

Taken from the environment: Oxygen, food, water

Discharge into the environment: Carbon dioxide, urine, waste products

Question 3 (1 point): Write the letter T in front of the correct answer, the letter S in the wrong answer

Water is one of the components that make up the plant body.

S Water can replace other minerals that plants need.

Thanks to water, plant roots absorb dissolved minerals.

A Thanks to water, plants can resist pests.

Question 4 (1 point): Find and fill in the blanks with suitable words (….) in the following lines:

Animals need enough air, food, water and light to survive and develop normally.

PART B: DISCUSSION (3 points)

Question 1 (1 point): What do plants need to live?

Plants need enough water, minerals, air and light to live and develop normally. Soil has a huge impact on plant life. Soil provides water and nutrients to plants. Light and air help plants photosynthesize, carry out the processes of organic synthesis, metabolism, and gas exchange to help plants live, grow and develop normally. If one of these conditions is missing, the tree will die.

Question 2 (1 point): Please list 2 things you should do to avoid the damage caused by light to your eyes when reading books, watching TV?

– Do not sit too close.

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– Light enough, soft.

– Don’t watch too much.

Question 3 (1 point): What is a food chain? Draw a diagram to illustrate a food chain.

A food chain is a sequence of organisms, each species is a food chain, each “chain” of food consumes the link in front of it, which is linked in the back to consume.

Diagram of a food chain in nature I know is:

4th grade Science 2nd Semester Exam – Question 3

Question 1: Which organism is able to use the energy of sunlight, non-living substances to form organic substances (such as starch and sugar)? ( M1)

* Circle the best answer.

A. Humans

B. Plants

C. Animals

D. All creatures

Question 2: Here are some statements about sound: (M2)

* Put the letter T in front of the correct sentence, the letter S in front of the wrong sentence:

A. Sound propagates far away will become stronger.

B. Sound can travel through solids and gases, but not through liquids.

C. Sound can only travel through gases, not liquids and solids.

D. Sound can travel through gases, solids, and liquids

Question 3: A good conductor of heat is: (M1)

* Circle the best answer

A. copper, zinc, aluminum, rubber

B. copper, lead, zinc, plastic

C. copper, lead, zinc, wood

D. copper, lead, zinc, gold

Question 4: When pouring water from the jar into the cup, we must put the mouth of the jar higher than the cup. Which of the following properties does this apply (M1)?

* Circle the best answer.

A. Water has no definite shape

B. Water can seep through some objects

C. Water flows from high to low

D. Water can dissolve some substances.

Question 5: Match the crosswords in column A with the crosswords in column B accordingly: (M2)

Question 6: To increase the yield of plants, we need: (M1)

A. Amount of carbon dioxide available in the air

B. Carbon dioxide doubles

C. The amount of carbon dioxide has tripled

D. Both A, B, C are correct

Question 7. Soak a bottle of cold milk in a cup of hot water: (M3)

* Correct write D, false write WILL

a/ The cup of water will give off heat, the milk bottle will gain heat

b/ If soaked for a long time, the cup of water will be hotter than the milk bottle.

Question 8. Take out a cup of cold water from the refrigerator, dry the outside. A moment later we see the outside wall of the wet cup. This result is explained as follows: (M2)

* Mark an x ​​in front of the correct answer.

A. Cold water can seep through the beaker

B. The water in the cup can fly quite out of the side of the cup

C. The cup brought out from the refrigerator is melted

D. There is quite a bit of water in the cup, when it meets the cold cup wall, the water condenses into water droplets on the outside of the cup

Question 9. Which of the following objects is self-luminous?: (M1)

* Circle the best answer

A. Earth

B. The Sun

C. The Moon

D. All of the above are correct

Question 10. Give practical examples of applying the properties of water (one example for each property) (M3)

a/ Water flows from high to low: …………………………………………………….

b/ Water can dissolve some substances: ……………………………………………………

c/ Water can seep through some objects: …………………………………………………….

Question 11. Can you name some foods that contain a lot of protein and fat? (M3)

My answer:

………………………………………………………………………………………………

Question 12. What are the causes of water pollution? Where do you live, what is the source of water pollution? (M4)

Answers to the 4th grade science exam at the end of term 2

Question 1: (0.5 points)

B. Plants

Question 2: (1 point)

A. Sound propagates far away will become stronger: FEAR

B. Sound can travel through solids and gases, but not liquids:

C. Sound can only travel through gases, not liquids and solids:

D. Sound can travel through gases, solids, and liquids: RED

Question 3: (0.5 points)

D. copper, lead, zinc, gold

Question 4: (0.5 points)

C. Water flows from high to low.

Question 5: (1 point)

1 C

2. d

3. a

4. b

Question 6: (0.5 points)

B. Carbon dioxide doubles

Question 7: (1 point)

The cup/cup of water will give off heat, the milk bottle will gain heat

S b/ If soaked for a long time, the cup of water will be hotter than the milk bottle

Question 8: (1 point).

D. There is quite a bit of water in the cup, when it meets the cold cup wall, the water condenses into water droplets on the outside of the cup

Question 9: (1 point)

B. The Sun

Question 10: (1 point) Depends on the student’s actual relationship

a. Water flows from high to low: making the roof slope down, scouring gutters, draining water

b. Water can dissolve some substances: make lemon juice with sugar

c. Water can seep through some objects: washing blankets, clothes

Question 11: (1 point)

Some foods contain a lot of protein that I know: soybeans, pork, chicken eggs, duck meat, fish, tofu, shrimp, beef, crabs, snails, etc.

Question 12: (1 point)

* Causes of water pollution:

– Indiscriminate littering of garbage, feces, and wastewater

– Using chemical fertilizers, pesticides, … without treatment

– Smoke, exhaust from factories, cannon trucks

– Oil pipeline rupture, oil spill

* solutions to protect local water sources:

– Keep clean around wells, water pipes; build septic tanks, two-compartment latrines.

– The latrine is built far from the water source.

Source: Central College of Natural Resources and Environment Category: General

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