Third Periodical Examination in Science

Which of the following objects is rigid?

• Sponge

• Steel rod

• Pillow

• Rubber ball

Which of the following objects is soft?

• Brick

• Plastic cup

• Foam

• Glass bottle

A rigid object is best described as:

• Flexible

• Hard and keeps its shape

• Light and soft

• Changes shape when pressed

Which of these groups contains only rigid objects?

• Chair, rock, metal spoon

• Sponge, fabric, dough

• Plastic bag, balloon, clay

• Pillow, cushion, soft foam

Which set consists only of soft objects?

• Pillow, clay, sponge

• Glass, wood, steel

• Plastic, stone, metal

• Brick, marble, plastic ruler

A force is:

• A way to measure weight

• A push or pull on an object

• A kind of energy

• A measure of speed

What is an example of a pull?

• Kicking a ball

• Throwing a stone

• Lifting a bag

• Pushing a chair

In a diagram showing a box being pushed to the right, the arrow representing force should point:

• Left

• Down

• Up

• Right

Arrows used to represent force show:

• Direction and speed

• Direction and strength

• Strength and shape

• Mass and size

Which activity involves a force?

• Sleeping on a bed

• Drinking water

• Pulling a drawer open

• Reading a book