Budding Scientist Unit 3 Revision

1. Tick 3 properties of a rubber band.

• stretchy

• rigid

• soft

• bendy

2. Tick 3 properties of an Oooobleck.

• slippery

• gooey

• brittle

• smooth

3. In the Oooobleck experiment, what is the experimental group?

• amount of water

• amount of cornstarch

• type of bowl

• type of measuring cup

4. Tick all the properties of this glass jar.

• hard

• flexible

• brittle

• smooth

5. Tick all the hard but brittle materials in this picture.

• glass jar

• brick

• cotton

• ice cubes

6. Why do we say that the cemented road is the hardest surface among the three?

• because it is made of rubber

• because it is made of cement

• because it can carry heavy load

• because it is made of wood

7. In this strength of bag investigation, how much load can an average plastic bag carry?

• 33-35 pounds

• 43-45 pounds

• 53-55 pounds

• 63-65 pounds

8. In this strength investigation, what factor is under experimental group?

• type of bags

• distance of bags from the floor

9. Inflatable life jackets are like __________. It fills with ________ when the cord is pulled quickly. This means that the person will ________ safely in the water. Choose the correct answers for the gaps.

• umbrella / water / sink

• balloon / air / float

10. Tick the 2 rigid materials among the group.

• slime

• wood

• elastic ruler

• cardboard box