Models and Designs Review #2

Designs can be improved through collaboration.

• true

• false

A diagram of an animal cell is an example of a model.

• true

• false

A van is an example of a model.

• true

• false

Select all examples of collaboration.

• Sarah and Jamal partner to improve a go-cart.

• Lisa works alone on her science study guide.

• JJ and Ramzi quiz each other with flashcards they made during G block.

• Lila and Joe work together to clean up their work station after the science experiment.

How far does a go-cart travel in 10 rotations if it's wheels have a diameter of 8 cm?

• 25.12 cm

• 251.2 cm

• 80 cm

Answer explanation

3.15 x 10 x 8

How far does a go-cart travel in 6 rotations if it's wheels have a diameter of 9 inches?

• 169.56 inches

• 28.26 inches

• 54 inches

Answer explanation

3.14 x 6 x 9

If a go-cart has wheels with a diameter of 5 inches, how far does it travel in 15 rotations?

• 75 inches

• 15.7 inches

• 235.5 inches

Answer explanation

3.15 x 5 x 15

How does the length of the rubber band affect the distance a rubber band powered go-cart can travel?

• The shorter the rubber band the farther the go-cart can travel.

• The longer the rubber band, the farther the go-cart can travel.

• The thicker the rubber band, the slower the go-cart will travel.

Sometimes science tries to explain things that cannot be seen.

• True

• False

What is the difference between building a scientific model and creating a design in engineering?

• A model is a representation of something to show how it works. A design uses knowledge to improve something that already exists.

• A design is a representation of something to show how it works. A model uses knowledge to improve something that already exists.

• A model is only conceptual of and a design is physical or 3-D

• There is no difference between scientific models and a design in engineering.