G2 TX Science CH2 Lesson 4 Review

Study the picture.

Which material is best for making a pillow?

• brick

• foam

• burlap

• steel

Look at the photos. Which is true about the photos?

• The combined parts can move things.

• The combined parts do not change.

• The combined parts change color.

4) What can you build by combining craft sticks, note cards, and glue?

• A small bridge

• A paper airplane

• A clay sculpture

• A digital clock

Study the diagram. Which property of one of the materials makes it a good choice for shoes?

• Durability

• Flexibility

• Lightweight

Think like an engineer who is selecting materials for a house. What materials are best for building a house?

To make a bowl of cereal I need to combine milk and cereal. What does the word combine mean?

• to join together

• a single unit

• to break apart

• to put back together

My Lego house fell apart, so I had to reassemble it. What does the word reassemble mean?

• a single thing

• to break

• to put back together again

• to join together

What does unit mean as used in science?

• to put back together

• a single thing

• to join together

• to break apart