Little scientists

There is a new park in your city with a suspension bridge over a small river. During testing, the bridge was found to be weak and shakes when several people walk on it. The engineers want to make it stronger. What is the best solution?

• Use a stronger material, such as steel, instead of wood to reinforce the base of the bridge.

• Paint the bridge with bright colors to make it more beautiful.

• Build a thinner rope to support the bridge, as it takes up less space.

• Leave the bridge as it is because it doesn't need to be stronger.

As a construction worker on the EXTREME ROLLER COASTER project at Mundo Aventura Park, what materials can you use to make the roller coaster safe and resistant?

• Sketch, hammer, wood, and cement.

• Playdough, scissors, paper, and cardboard.

• Eggs, bread, milk, and jam.

In the park, there is a rock that children play on and a wooden table with benches for picnics. Some children wondered about the difference between the rock and the table.

• The table lasts longer than the rock because it is made by humans.

• The rock has brighter colors than the table.

• The table is natural because it is made of tree wood.

• The rock is a natural structure, and the table is an artificial structure.

Which type of soil is best for supporting attractions in a theme park?

• Gravel soil, which allows for good drainage.

• Clay soil, which is very compact and strong.

• Sandy soil, which is easy to excavate.

Why is steel preferred in the construction of skyscrapers?

• Steel is lighter than wood.

• Steel is cheaper than concrete.

• Steel is stronger and can support more weight.

Maria needs to build a stage for an event but has no construction experience. What type of professional should she hire to ensure the stage is safe?

• An artist, to design the stage.

• A structural engineer, to ensure the safety of the stage.

• A chef, to take care of the food for the event.