Q4 Summative Science G4

What is the most basic definition of force?

• It is anything that moves

• It is a push or pull

• It is an interaction between two or more objects

• It is anything that causes change

What is a characteristic of force?

• It acts only on moving objects?

• It acts the same way in all objects.

• It acts in a certain direction.

• It acts only on stationary objects.

Which is the following activities needs a pulling force?

• standing straight beside a pole

• typing using the laptop keyboard

• sipping a drink using a straw

• holding a pen

Which of the following objects goes back into its original shape when you let go of it after squeezing?

• Flour dough

• cooked pasta

• glass bottle

• sponge

Which of the following actions uses a pulling force only?

• pressing

• twisting

• pounding

• stretching

Why do some objects permanently change in shape and some do not?

• Objects are affected by force, depending on their properties.

• Objects change for a short time only if pulling forces are used.

• Objects permanently change their shape if pushing force is used only.

• Objects do not permanently change in shape but change in size instead.

Which of the following activities uses pull forces to change the shape of an object?

• stretching dough to make noodles

• pounding aluminum to make a foil

• using a rolling pin to flatten the dough

• pressing clay to make a cup

Which is true about crumpled paper?

• The paper will go back to its original shape after the force is removed.

• Pull forces cause the paper to crumple.

• Push forces cause the paper to crumple.

• The paper will flatten itself back into a sheet when the force is removed.

Why are cardboard folders used to keep paper sheets neat?

• Folders pull the paper sheets from all sides to keep them neat.

• Folders protect the paper sheets from outside forces that can change their shape.

• Folders fold the paper sheet into the desired shape.

• Folders change the shape of the paper sheets so that they can be folded.

You notice that when toothpaste is squeezed out of its tube, it follows the shape of the tube opening. What can be inferred based on the observation?

• Toothpaste has properties that allow it to stay in shape after a force is applied to it.

• Toothpaste is shaped like a tube, and we see that shape once it is out of the tube.

• Pushing and pulling changed the shape of the toothpaste from flat to tube.

• Forces act on the toothpaste and change its shape once it is our of the tube.