Science Unit 2 Test

Choose your teacher from the list below.

• Ms. Brower
• Mrs. Davis
• Mrs. Newton
• Ms. Webber

1. What is the main goal of the design process?

• To write reports
• To make prototypes
• To make charts and graphs
• To find solutions to problems

2. Engineers designed plans to make freezers for food. What main problem did freezing food solve?

• how to make ice cubes
• how to keep food fresh
• how to make ice cream
• how to make it easier to pack food into trucks

3. How did these students solve the problem of how to get in and out of their tree house?

• They built a rope ladder.
• They built steps on the tree trunk.
• They climbed branches to reach the tree house.
• They built it low so they can reach it from the ground.

4. Nayla builds a paper bridge between two stacks of books. It collapses when she pushes a toy car across it. Which material would not help her to improve the bridge?

• markers
• paper
• straws
• tape

5. Kayla lives in a city with a lot of people but not much land. There is not enough space for each family to have its own house. Which is a way engineers can help solve the problem?

• by identifying not enough land as the problem in the city
• by communicating with other engineers to share the problem
• by designing and building tall buildings that can house many people
• by having people from different families live together in the same house

6. Dishwashers and clothes dryers are fairly new technologies. Which is a way that these appliances changed people’s lives?

• They make dishes and clothes last longer.
• They never break, so people do not have to worry about them.
• They make chores take longer because these appliances must be watched.
• They make these chores take less time, which lets people do other things.

7. Rodrigo plans and makes a bird feeder. He puts the bird feeder in his yard, but the birds cannot get food because of the small hole in the feeder. Which should Rodrigo do 𝐧𝐞𝐱𝐭?

• communicate
• find a problem
• plan and build
• redesign

8. Veronica builds a paper bridge between two stacks of books. Which is 𝙣𝙤𝙩 a way to make the paper bridge stronger?

• adding layers of paper to the bridge
• using a heavier toy car to cross the bridge
• taping the sides of the bridge to the books
• adding craft stick supports under the bridge

9. Hannah has designed and built her first bench. Which steps of the design process will she use now?

• Redesign and communicate
• Find the problems and communicate
• Test to improve and redesign
• Plan and build a prototype