Unit 1B Post Assessment Science 4.PS3.3

Which roller coaster will be the fastest?

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Which is true about the speed of the rollercoaster?

• The more riders on the roller coaster, the faster the roller coaster goes.

• The taller the first hill of the roller coaster, the faster the speed of the roller coaster

• The more hills it has, the faster the speed of the roller coaster

• There is no pattern that can help you predict the speed of a roller coaster.

LOOK AT THE PICTURE. What pattern do you notice about how many pins fall down?

• The faster the bowling ball speed, the more pins are knocked down.

• . The lower the bowling ball is held, the more pins are knocked down.

• The more energy the bowling ball has, the more pins are knocked down.

• There is no pattern to predict how many pins will fall down.

LOOK AT THE PICTURE. If Abigail throws the black ball at 20 miles per hour , and it hits the gray ball first, what do you predict will most likely happen?

• When the black ball collides with the gray ball, all the energy from the black ball will transfer to the gray ball. The gray ball will move toward the pins and have enough energy to knock down 9 or more pins

• When the black ball collides with the gray ball, some of the energy from the black ball will transfer to the gray ball. The gray ball will move towards the pins, but will only have enough energy to knock down fewer than 9 pins.

• When the black ball collides with the gray ball, none of the energy from the black ball will transfer to the gray ball. The gray ball will not move toward the pins and it will not knock down any pins

Pamda plugs the toaster into the outlet and presses the button down to start the machine. Which of Padma’s observations provide evidence that energy has been transferred from the electrical outlet to another place?

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Maya wants to build a tiny flashlight by connecting a battery to an LED bulb. There are three rules that Maya needs to follow to get her flashlight to work: 1. The electrical energy must follow a path. 2. The path must be made using a conducting material. 3. Energy can only flow along the path in the direction of negative (-) to positive (+). Select 2 conducting materials that she could use:

• copper wire

• aluminum foil

• rubber bands

• string

What is the pathway in which energy flows?

• negative to positive

• positive to negative