Science 5

1. 1. Plant serves as agents of weathering. Which of the following statements support this idea?

•   A. Branches of plants cause the rocks to break when blown by the winds.

• B. Decaying trunks of plants cause the rocks to break

• C. Falling of leaves cause rocks to break. peated freezing and thawing of water.

• D. Root of plants that grow in rocks and cause them to break

2. 2. What is the process involved in the breaking of rock into pieces.

• A.      deposition 

• B.      erosion      

• C. sedimentation

•      D. weathering

3. What do you think caused the rock to break open? 

• A. The continuous blowing of the wind 

•   B. The continuous change in temperature

• C. Repeated freezing and thawing of water.

• D. The roots of plants drive the rocks apart

4. The following human activities are caused of physical weathering, EXCEPT.

• A. Boating and fishing   

• B. Building roads and tunnels 

•      C. Mining ores

•   D. Acidic water in the river

5. During chemical weathering, what will happen to the type of rock if it has undergone chemical weathering.

                    

• A. No new rock is formed         

• B. A new rock is formed, the same as the original rock  

• C. A new rock is formed, larger than the original rock

• D. A new rock is formed, different from original rock

6. During heavy rain, classes were suspended in schools. While walking home, Nene noticed the very dark brown color of the water coming from the river. What can you infer from the situation?

• A. Big waves carried the soil      

• B. Landslides carried the soil    

• C. Water carried the soil from higher grown

• D. Strong wind carried the soil from the lower grounds

77. Noel noticed thick dust forming on their windowsill. What will happen to the sediments continuously carried by the wind, flowing water, sea, or ice for a long period of time.

• A. It will move topsoil.

• B. It will wash away beaches.

•       C. It will form new land features.

• D. It will break down large rocks into smaller ones.

8. During an activity in their Science class, the pupils use a fan to blow piles of sand. It created changes in the pile of sand. What natural process of weathering does it model?

1.                              

• A. Forming of details.  

•  B. Forming of sand dunes

•   C. Weathering of rocks to make soil

• D. None of the above.

9. Which causes the limestone formation that make Palawan a popular tourist destination? 

                                                   

                                                 

• A. Eruption

• B. Glaciers

• C. Water

• D. Wind

10. Marble is often used for statues or grand buildings because

• A. It has attractive textures and colors.

• B. It splits easily into thin sheets.

• C. It wears away easily.

• D. All of the above