LEAP Science Review

Which statement explains what caused the truck to move in trials 3 and 4 but stay still in trials 1, 2, and 5?

• When one student pushed with more force than the other student, the truck rolled.

• When both students pushed with the same force, the truck rolled to the right or the left.

• When one student pushed with more force than the other student, the truck stayed still.

• When one student stopped pushing before the other student stopped, the truck stayed still.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which flower is most attractive to hummingbirds, rather than to bees?

• Flower A

• Flower B

• Flower C

• Flower D

Tags

NGSS.MS-LS1-4

Which statement best supports your answer for why you chose the flower for part A?

• The most attractive flower has large petals so that hummingbirds can see it.

• The most attractive flower has small petals so that hummingbirds will not hit it with their wings.

• The most attractive flower has a long, narrow tube so that other insects cannot get at the nectar.

• The most attractive flower has a short, wide tube so that hummingbirds can more easily get at the nectar.

Tags

NGSS.MS-LS1-4

Which statement explains the most likely reason why the spoonbills in the zoo have a paler pink color than those in the wild?

• Spoonbills in the zoo live very close to fresh water.

• Spoonbills in the zoo sit in the sun for much of the day.

• Spoonbills in the zoo are older than spoonbills in the wild.

• Spoonbills in the zoo have a different diet than spoonbills in the wild.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Tornadoes have very strong winds that can damage the roof of a house. Students study different design solutions to help reduce the damage caused by tornadoes. One student argues that the best design solution is to use thick metal straps to attach the roof of the house to the walls. Houses in an area are hit by a tornado. Which evidence best supports the student's claim that metal straps are the best design solution?

• Houses with metal straps have more water damage than houses without metal straps.

• Houses with metal straps have larger cracks in the roof than houses without metal straps.

• Houses with metal straps have more dents in their roofs than houses without metal straps.

• Houses with metal straps have less of their roofs blown off than houses without metal straps.

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

Based on the information in Map 1, which region most likely has the most thunderstorms?

• Region W

• Region X

• Region Y

• Region Z

Tags

NGSS.MS-ESS2-5

A student wanted to test whether lightning only strikes near metal. She did an experiment with static electricity. She took these steps. 1. She rubbed her feet on the carpet to make herself electrically charged. 2. She put her finger near an object and observed the results. 3. She repeated steps 1 and 2 with four different objects.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which statement describes what will most likely happen if the student rubs her feet on the carpet and then holds her hand near a metal ruler?

• The student will feel a shock when her hand is close to the metal ruler.

• The ruler will bend toward the student’s hand as she reaches for it.

• The student will feel a shock only if she touches the metal ruler.

• The metal ruler will not have any effect on the student’s hand.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The students saw lightning strike two different objects in the video. First, lightning struck the tallest tree in a large forest. Second, lightning struck the metal pole on top of the tallest building in a city. Which question should the students investigate to help them understand why lightning struck these two objects?

• Does lightning strike only objects made of metal?

• Does lightning usually strike more in forests or in cities?

• Does lightning usually strike the tallest object in an area?

• Does lightning strike more in one season than in another?

Which statement best explains a reason why musk oxen live in groups?

• It allows them to share their food.

• It allows them to provide shade for their young.

• It allows them to travel a long way without getting lost.

• It allows them to stay warm when the tundra is very cold.

Tags

NGSS.MS-LS2-1