Science Leap Practice

A builder compares roof designs for a house to be built in an area that has high winds. Which statements best describe a design that will protect the roof of a house in an area with high winds? Select the two correct answers.

• The best design stops the greatest amount of wind from blowing across the roof.

• The best design allows the roof to stay on the house even when strong winds blow.

• The design of roof 1 is best, because wind blows past the walls of the house.

• The design of roof 2 is best, because no wind is trapped by the roof.

• The design of roof 3 is best, because very little wind is trapped by the roof.

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NGSS.MS-ETS1-1

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The diagram shows two parent horses and their foal. Which statements identify traits the foal most likely inherited from its parents? Select the two correct answers.

• gray hair from its mother

• a white tail from its mother

• a solid hair color from both parents

• a spotted hair pattern from its father

• white hair on its face from both parents

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NGSS.MS-LS3-2

People need vitamin D to help their bones get enough calcium so that the bones can be strong. People can get vitamin D from milk, fish, and mushrooms. People’s bodies can also make vitamin D when their skin absorbs light from the Sun. Which situation will most likely cause a person’s bones to become weak?

• The person spends a lot of time outside.

• The person avoids foods with vitamin D.

• The person eats cereal with milk for breakfast each morning.

• The person eats lots of fish that provide vitamin D.

Jacob investigated the strength of magnets by playing with magnetic train cars. He slid two cars toward each other. He tried different combinations of the train cars, as shown in the table. Which statement best explains the pattern in Jacob’s observations?

• Two strong magnets will have a strong attractive force when the same poles face each other.

• Two strong magnets will push away from each other with a great force when the same poles face each other.

• Two weak magnets will push away from each other with a great force when the same poles face each other.

• One strong magnet and one weak magnet will have a strong attractive force when the same poles face each other.

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What kind of clothing should someone living in Sydney wear in July?

• a heavy coat, because the average temperatures in July are close to freezing

• shorts, because the average temperatures in July are warm summer temperatures

• a light jacket, because the average temperatures in July are close to room temperature

• a warm sweater, because the average temperatures in July are much colder than room temperature

How does the temperature graph allow someone living in Sydney to decide what to wear?

• The numbers on the graph predict the high and low temperatures that will occur each day.

• The graph shows the temperatures from many years to provide information about Sydney’s climate.

• The numbers on the graph help identify whether Sydney’s climate is rainy or dry during different parts of the year.

• The graph shows the temperatures from the past year to explain the changes in Sydney’s weather over time.

Sometimes a dolphin will be forced out of its group. Predict two effect of a dolphin living without a group. THIS WOULD BE LIKE A SHORT ANSWER QUESTION ON LEAP.

• The dolphin might be more likely to be eaten by predators as there are no other dolphins to provide protection from predators.

• The dolphin might be more likely to survive being eaten by predators as there are more dolphins to provide protection from predators.

• The dolphin may be able to find more food due to the cooperation of other dolphins.

• The dolphin may not be able to find as much food without the cooperation of other dolphins.

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NGSS.MS-LS2-1

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What should the student do in order to best model the cause of the day and night cycle?

• Spin the ball in different directions

• Tilt the ball while it is spinning

• Paint one half of the ball b lack and the other half white

• Shine a bright light on one side of the ball

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NGSS.MS-ESS1-1

The law of conversation of energy states that energy can be neither created or destroyed, but it can change its_______

• obsrvation

• fome

• big papa

• form

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A soccer player kicked a ball, which then rolled across the ground. What type of energy transfer took place when he kicked the ball?

• a. Electrical

• b. Thermal

• c. Electromagnetic

• d. Mechanical

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