Grade 4 - Science
Learning task 3: Prepare the materials listed below. You may ask the help of
your parents/guardians of any adult members of the family if needed.
Title: "How does sound travel in different materials?"
Materials:
Stick of at least one foot long
Small pail (bucket) half filled with water
Two pieces of medium sized stone
A table or a chair preferably made of wood or metal
Drum and drumsticks (toys will do)
Big Tin can if drum is not available
Procedures:
1. Find a table or a chair. With the use of a stick, gently tap the table or the chair. What did you hear? Do this for at least five times with different strengths of tapping. Try from gentle to hart tap. Observe the sound you produced with each tap.
2. Tap to medium-sized stone in a pail half filled with water. Be careful not to spill the water when you tap the stones. Observe what happens when the stones hit each other. Do you hear a sound? Do this for at least five times.
3. Do this third task in an open area with a partner (other member of your family). Let your partner stay at least 10 meters away from you. Strike a drum with drumsticks. Can both of you hear the sound the drum made? Strike the drum with different strength, Try it from a gentle tap to a hard tap. Take note of the sound that is produced.
Questions:
1. Did you hear a sound when you tapped the table or the chair with a stick? What happened to the sound when you tapped the table with different strengths?
2. Were you able to produce sound underwater when you struck/hit two stones together?
3. Were you able to hear the sound you produced underwater?
4. Did the sound coming from the drum reach the person away from it?
5. What could you infer from this activity?
Learning task 4: Prepare the materials listed below. You may ask the help of
your parents/guardians of any adult members of the family if needed.
Title: "How is heat transferred?"
Materials:
SET A / / / / / / / / / / / / / / / / / / / / SET B
-Alcohol lamp/candle / / / / / / / / -Hot water
-Matchsticks/lighter / / / / / / / / / -Coffee mug
-Clamp/tong / / / / / / / / / / / / / / /-Metal spoon
-Metal rod or a nail / / / / / / / / / /-Timer/Stopwatch
-Margarine
-Plastic spoon
Procedures:
SET A
1. Light the alcohol lamp/candle with a matchstick or lighter. (Ask the help of an adult in doing this activity.)
2. Scoop margarine from its container then spread it to the half-end, close the head of the nail.
3. With the use of a pair of tongs, hold the part of he nail where you spread the margarine.
4. Slowly bring the part of the nail without margarine to the tip of the flame of the alcohol lamp or candle. Hold the nail in the flame until you observe a change in the margarine.
5. Record your observations.
Questions:
1. What happened to the margarine on the nail?
2. Why do you think the change took place even if it was not directly exposed to the flame?
3. If we are using a metal tong and continue to expose the nail to the flame, what do you think will happen to the metal tong?
4. If we are using a pair of metal tongs and continue to expose the nail to the flame, what do you think will happen to the metal tongs?
SET B
Procedures:
1. Fill a mug with hot water. Be extra careful when pouring hot water to the mug. (Ask assistance of an adult.)
2. Place a metal spoon into the coffee mug.
3. Wait for about five minutes. Carefully feel the exposed end of the spoon. Slightly touch the outside surface of the mug, too. Record your observation.
Questions:
1. What happened o the exposed end of the spoon after five minutes?
2. What did you notice about the outside surface of the mug when you touched it? Why?
3. Suggest ways to reduce the effect of heat on the turner so that we can avoid getting hurt when we lit it out of the hot pan.
Not to do:
Nonsense = Report every nonsense answer in your profile
Guessing the answer = Report every nonsense answer in your profile
Wrong answer = Report every nonsense answer in your profile
To Do:
Perfect answer = Brainliest mark, 5 Stars, Thank you heart, 20 years of luck.
Almost perfect answer = 5 Stars, Thank you heart. 12 years of luck.
Learning task 3: Prepare the materials listed below. You may ask the help of
your parents/guardians of any adult members of the family if needed.
Title: "How does sound travel in different materials?"
Materials:
Stick of at least one foot long
Small pail (bucket) half filled with water
Two pieces of medium sized stone
A table or a chair preferably made of wood or metal
Drum and drumsticks (toys will do)
Big Tin can if drum is not available
Procedures:
1. Find a table or a chair. With the use of a stick, gently tap the table or the chair. What did you hear? Do this for at least five times with different strengths of tapping. Try from gentle to hart tap. Observe the sound you produced with each tap.
2. Tap to medium-sized stone in a pail half filled with water. Be careful not to spill the water when you tap the stones. Observe what happens when the stones hit each other. Do you hear a sound? Do this for at least five times.
3. Do this third task in an open area with a partner (other member of your family). Let your partner stay at least 10 meters away from you. Strike a drum with drumsticks. Can both of you hear the sound the drum made? Strike the drum with different strength, Try it from a gentle tap to a hard tap. Take note of the sound that is produced.
Questions:
1. Did you hear a sound when you tapped the table or the chair with a stick? What happened to the sound when you tapped the table with different strengths?
2. Were you able to produce sound underwater when you struck/hit two stones together?
3. Were you able to hear the sound you produced underwater?
4. Did the sound coming from the drum reach the person away from it?
5. What could you infer from this activity?
Learning task 4: Prepare the materials listed below. You may ask the help of
your parents/guardians of any adult members of the family if needed.
Title: "How is heat transferred?"
Materials:
SET A / / / / / / / / / / / / / / / / / / / / SET B
-Alcohol lamp/candle / / / / / / / / -Hot water
-Matchsticks/lighter / / / / / / / / / -Coffee mug
-Clamp/tong / / / / / / / / / / / / / / /-Metal spoon
-Metal rod or a nail / / / / / / / / / /-Timer/Stopwatch
-Margarine
-Plastic spoon
Procedures:
SET A
1. Light the alcohol lamp/candle with a matchstick or lighter. (Ask the help of an adult in doing this activity.)
2. Scoop margarine from its container then spread it to the half-end, close the head of the nail.
3. With the use of a pair of tongs, hold the part of he nail where you spread the margarine.
4. Slowly bring the part of the nail without margarine to the tip of the flame of the alcohol lamp or candle. Hold the nail in the flame until you observe a change in the margarine.
5. Record your observations.
Questions:
1. What happened to the margarine on the nail?
2. Why do you think the change took place even if it was not directly exposed to the flame?
3. If we are using a metal tong and continue to expose the nail to the flame, what do you think will happen to the metal tong?
4. If we are using a pair of metal tongs and continue to expose the nail to the flame, what do you think will happen to the metal tongs?
SET B
Procedures:
1. Fill a mug with hot water. Be extra careful when pouring hot water to the mug. (Ask assistance of an adult.)
2. Place a metal spoon into the coffee mug.
3. Wait for about five minutes. Carefully feel the exposed end of the spoon. Slightly touch the outside surface of the mug, too. Record your observation.
Questions:
1. What happened o the exposed end of the spoon after five minutes?
2. What did you notice about the outside surface of the mug when you touched it? Why?
3. Suggest ways to reduce the effect of heat on the turner so that we can avoid getting hurt when we lit it out of the hot pan.
Not to do:
Nonsense = Report every nonsense answer in your profile
Guessing the answer = Report every nonsense answer in your profile
Wrong answer = Report every nonsense answer in your profile
To Do:
Perfect answer = Brainliest mark, 5 Stars, Thank you heart, 20 years of luck.
Almost perfect answer = 5 Stars, Thank you heart. 12 years of luck.
Answers & Comments
Verified answer
Question 1:
1.Yes I hear the sound. The sound gets stronger when the amount of strengths applied increases and gets lower sound with less strength.
2.No, you Cant Hear An Sound Form Underwater, and If you're stacked with two stones together.You Cant hear sound form Underwater..
3.You don't hear much.When your head is submerged, your skull also vibrates with the sound because it is close to the same density and elasticity as water.
4.Yes,if the drum is loud
5.Repeated same sound
Question 2:
1.The margarine will melt.
2.The heat from the lamp makes the atoms of the bottom nail to vibrate faster.
3.The metal tone will become hot because metals are conductors of heat.
4.It will rust up because its getting exposed with another metal thing.
Question 3:
1.As a result of the collision between the water particles and spoon particles, the particles of the spoon begin to move faster and the metal spoon becomes hotter. e metal spoon gets hotter, the butter begins to melt and the bead slides down the spoon.
2. Transfer of heat occurs from the hot coffee and hot mug to the surrounding air.The transfer of heat from the hot water through the metal can to the cold water is referred to as conduction.
3.Use pot holder or gloves so you won't get your finger burn.
Ps:Cttro