Science Practice

Gas Particles Angela studies three different types of matter in her science class. She claims that air is a gas made of particles too small to be seen. Which two examples provide evidence to support Angela’s claim that gases are made of particles too small to be seen? Select the two correct answers.

• Bubbles in boiling water

• Ice cream melting in a bowl

• Snow forming in clouds

• Melted lava hardening into rock

• A kite floating in the sky

Tags

NGSS.MS-PS1-1

Lamar is studying water quality in his science class. He learns that salt water is seeping into his neighboring town’s water supply and makes the water dangerous to drink. Lamar’s teacher challenges his class to investigate ways to identify salt water without tasting it. Part B: What measurements can Lamar take before he conducts his investigation in Part A to provide evidence of which cup contained the salt water?

• Find the volume of both liquids to see which one took up the most space.

• Measure the temperature of each liquid to provide evidence that a chemical change had taken place.

• Measure the mass of each cup to see which one had the most matter.

• Use a photometer to observe which cup had the most salt conductivity.

Tags

NGSS.MS-PS1-2

Food provides animals with the materials they need for body repair and growth. Food also provides animals with the energy they need to maintain body warmth and for motion. Arctic ground squirrels in Alaska are the largest of the North American ground squirrels. They are omnivores. They eat plants, mushrooms, eggs, insects, small animals, and even their own young! To deal with the harsh winters, they will hibernate. When animals hibernate they become inactive or “sleep” for an extended period of time. The Arctic ground squirrel hibernates for 7 to 8 months. When they hibernate, they lose a large amount of their body weight. Part A: Arctic ground squirrels will not hibernate until they have enough body fat. Why would this be an important behavior for the animal?

• This behavior will allow the Arctic ground squirrel the ability to fight for the best shelter.

• This behavior will help the Arctic ground squirrel find a mate.

• This behavior will give the Arctic ground squirrel more energy to find food and store it for emergencies during the winter.

• This behavior will help the Arctic ground squirrel maintain its body temperature during hibernation and move after hibernation.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Food provides animals with the materials they need for body repair and growth. Food also provides animals with the energy they need to maintain body warmth and for motion. Arctic ground squirrels in Alaska are the largest of the North American ground squirrels. They are omnivores. They eat plants, mushrooms, eggs, insects, small animals, and even their own young! To deal with the harsh winters, they will hibernate. When animals hibernate they become inactive or “sleep” for an extended period of time. The Arctic ground squirrel hibernates for 7 to 8 months. When they hibernate, they lose a large amount of their body weight. Part B: Which model best represents how the Arctic ground squirrel will get the food it needs to store body fat?

• grass -> caterpillar -> arctic ground squirrel -> sun

• sun -> grass -> caterpillars -> arctic ground squirrel

• arctic ground squirrel -> grass -> caterpillars

• caterpillars -> grass -> arctic ground squirrel -> sun

Tags

NGSS.MS-LS2-3

Question 1: Soccer Ball

Coach Vance coaches the 5th grade soccer team at Caddo Lake Elementary. He asks two students to help him prepare for practice and inflate the soccer ball to at least 420 grams but no more than 450 grams. The two students measure the mass of the ball when it was deflated and when it was inflated.

Part A: Which model best demonstrates the particles of matter in the inflated soccer ball?

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Tags

NGSS.MS-PS1-1

Which of the following gases is released during Photosynthesis?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Hydrogen

Tags

NGSS.MS-LS1-6

The raw materials for Photosynthesis are

• Oxygen and Water

• Carbon Dioxide and Water

• Water, carbon Dioxide and Sunlight

• Nitrogen and Water

Tags

NGSS.MS-LS1-6

On adding iodine solution to starch, it _______________.

• Turns blue-black

• Turns green

• Remains colourless

• Turns red

Tags

NGSS.MS-PS1-2

The process of releasing silk from the cocoon is ___________.

• Sorting

• Reeling

• Throwing

• Shearing

Bile Juice is produced by ________.

• Pancreas

• Gall Bladder

• Liver

• Stomach