Elise followed these steps of an investigation:

• Collect five objects made of different types of metal.

• Place them on a large laboratory table.

• Touch each metal object with a magnet and lift it slowly.

• Record observations.

Which of the following statements is Elise most likely testing?

• All types of metal are attracted to magnets.

• Each magnet can lift the metal object to the same height.

• Larger magnets can pick up heavier metal objects than smaller magnets can.

• Heavier metal objects are more attracted too magnets than lighter metal objects are.

Tags

NGSS.MS-PS2-5

Sirius appears to be the brightest star in the nighttime sky, even though a star named Arcturus gives off more light. Why do you suppose Sirius appears to be brighter than Arcturus in our nighttime sky?

• Sirius is larger than Arcturus is.

• Sirius omits different gases than Arcturus does.

• Sirius is closer to Earth than Arcturus is.

• Sirius is a different color than Arcturus.

Each organ in the human body carries out a specific function. Which organ in the human body breaks down food so that it can be used?

• Stomach

• Heart

• Kidneys

• Bladder

Carlos is performing an investigation using several earthworms. He places a rectangular box under a bright lamp and covers one-half of the box so that it is shaded. Then, he puts the earthworms into the box on the side that is still brightly lit. Later, Carlos notices that all of the earthworms have crawled over to the shaded side of the box. Based on his investigation, which of the following is an observation and NOT a personal opinion?

• Earthworms are afraid of light.

• Earthworms like staying together.

• Earthworms move away from light.

• Earthworms like living in the ground.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What happens to the temperature of water as it goes from a solid to a liquid?

• It decreases

• It increases

• It stays the same

• It first increases, then decreases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following best describes the role of decomposers in an ecosystem?

• They produce their own food through photosynthesis.

• They consume other organisms for energy.

• They break down dead organisms and waste, returning nutrients to the soil.

• They are the primary consumers of plants.

Tags

NGSS.MS-LS2-3

Emma adds 10 grams (g) of salt to a jar of water. She then adds the same amount of sand to a different jar of water. Then, she shakes both jars, sets the jars down, and comes back 5 minutes later to observe. What should Emma expect to observe after 5 minutes?

• Both the salt and the sand dissolved in the water.

• Both the salt and the sand settled to the bottom of the jar.

• The salt settled to the bottom of the jar, and the sand dissolved in the water.

• The salt dissolved in the water, and the sand settled to the bottom of the jar.

Tags

NGSS.MS-PS1-2

The stem is an important part of many plants. Which of the following is most similar to the role performed by the stem of a plant?

• An anchor holding a boat in place

• A snack company producing energy bars

• A colorful sign attracting people into a store

• An elevator transporting supplies from one floor to another

Brielle is designing an experiment to see whether sugar or artificial sweetener will attract the greater number of ants. Which statement best describes why Brielle should write down her experimental procedure?

• The exact experiment can be repeated by others and the results compared.

• The experiment can be changed by others to get different results.

• The data will help people decide what type of sweetener to use.

• The data will show people which ants are more common.

Chris wants to show Saidi what happens during one Earth day. Chris holds up a small globe representing Earth, and Saidi holds a large ball representing the Sun. What should Chris do to show Saidi what happens during one Earth day?

• Chris should move the globe in one complete circle around Saidi.

• Chris should move the globe toward Saidi and then away from her.

• Chris should slowly lift the globe above his head and then lower it.

• Chris should slowly spin the globe one complete time around its axis.

Tags

NGSS.MS-ESS1-1