Open Scied 7.4

What are overlapping food chains with different pathways for the flow of energy in an ecosystem?

• Food Chain

• Food Web

• Energy Pyramid

Tags

NGSS.MS-LS2-3

____________ are organisms that get their energy from feeding on producers in a food chain.

• Primary Consumers

• Secondary Consumers

• Tertiary Consumers

• All of the above

Tags

NGSS.MS-LS2-2

___________ get their energy from eating other animals which have eaten plants.

• Primary Consumer

• Secondary Consumer

• Tertiary Consumer

• Producer

Tags

NGSS.MS-LS2-3

A _________ is the position an organism occupies on the food web.

• producers

• consumers

• energy pyramid

• trophic level

How can we explain another phenomenon, like elephant toothpaste, where gas bubbles appear after combining different substances together?

• Combining different substances may result in forming something new, even inside a closed system.

• Combining different substances forces one of the substances to change to a gas.

• Combining different substances may result in particles rearranging and interacting in different ways.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which describes solubility best?

• how well a substance can change into a liquid

• how well a substance can dissolve in a liquid

Which are possible evidence of a gas being produced? Select all that apply.

• fizzing

• color change of the liquid

• bubbles

• a new sound or odor

Tags

NGSS.MS-PS1-2

How does matter change in the bath bomb and water phenomenon?

• Solids from the bath bomb break down into smaller pieces inside the water.

• Particles of a new state or phase of matter are produced.

• Particles of the bath bomb mix and may interact to produce a gas.

• Matter does not change in the bath bomb and water phenomenon.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How can particles of a new substance be formed out of particles of an old substance?

• Particles may break apart and rejoin in different ways, forming a substance with a new identity.

• Particles get smashed up and disappear, and new particles pop up.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

According to our labs and investigations, which statements are true so far?

• When a bath bomb is added to water, the ingredients dissolve and produce gas bubbles.

• The bath bomb itself does not produce gas without water.

• The bath bomb contains pockets of gas trapped inside which are released when added to water.

• Lemonade powder contains citric acid, which is needed to produce the gas.

• Citric acid and baking soda in water produce the gas bubbles, which may be made of carbon dioxide gas.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5