Cast Science Test Practice

Measurements of the speed of the train at additional points on the ride indicate that energy is being lost. The students present two claims for the cause of this energy loss. CLAIM 1: The loss of energy is due to the air pushing back on the train as it moves down the track. CLAIM 2: The loss of energy is due to the friction of the train wheels with the track. Which observations support Claim 2?

• The train moves faster after the cars are streamlined.

• The tracks are warmer after the train has passed.

• The train moves faster after oil is applied to the wheels and tracks

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Two students are investigating how balanced and unbalanced forces affect the motion of a small cart with freely rolling wheels. The students want to demonstrate three cases of motion:

1. acceleration to the right
2. acceleration to the left
3. no acceleration

The students use string to attach two spring scales to the cart so that the forces exerted on it can be measured in newtons (N), as shown in the figure. The cart is then released from rest.

Which set of forces will allow the students to demonstrate all three cases of motion?

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Tags

NGSS.MS-PS2-2

Which statement best describes why the second hill of a roller coaster ride is lower than the first hill of a roller coaster ride? If the second hill wasn't lower than the first hill, the roller coaster train would...

• need more mass to absorb enough potential energy to move up the second hill

• have a higher velocity as it moved down the second hill, potentially creating a dangerous ride

• need a source of energy other than the potential energy from the first hill to make it up the second hill

• have even more kinetic energy as it moved down the second hill, potentially creating a dangerous ride.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

NGSS.MS-PS3-2

Use the graphs and the partial food web to predict the changes in the sea urchin population as the kelp pupulation INCREASES. What will happen to the sea urchin population?

• Sea urchin population increases

• Sea urchin population decreases

• Sea urchin population remains steady

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

NGSS.MS-LS2-1

Use the graphs and the partial food web to predict the changes in the kelp population as the kelp pupulation INCREASES. What will happen to the kelp population?

• Kelp population increases

• Kelp population decreases

• Kelp population remains steady

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-2

Which model correctly shows that the mass is conserved in the reaction? 

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Tags

NGSS.MS-PS1-5

In this equation, the reactants are on the

• left of the arrow

• right of the arrow

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Why would the dark colored fish have a better chance of surviving after the new predator is introduced?

• The predator can move faster than this species of small fish

• The predator cannot see them as well as the fish of the light color

• The predator predicts where each fish will be

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Students are asked to make a claim about which design will be both break-resistant and keep the water hot for the longest time. Which claim best meets the two criteria?

• Bottle 1: It has an unbreakable steel lining.

• Bottle 2: It has a glass inner lining which is a better insulator

• Bottle 3: It has an unbreakable steel inner lining and a foam cover that will keep the water hot for the longest time.

• Bottle 3: It has glass inner lining and a foam cover that will keep the water hot for the longest time.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

Choose a claim that best agrees with the data.

• Mass does not affect the gravitational force between two objects

• Mass is the only variable that affects the gravitational force between two objects

• Distance is the only variable that affects the gravitational force between two objects

• Both mass and distance are variables that affect the gravitational force between two objects.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5