Which explains why the fork looks different under water?

• light can't pass through the glass

• the wavelength of light lengthens

• the amount of light increases when going through water

• light is refracted at an angle

According to the energy pyramid, which of the following will most likely happen to the other organisms if all the harvest mice died?

• The number of hawks would decrease, and the number of insects would increase.

• The number of hawks would increase, and the number of insects would increase.

• The number of hawks would increase, and the number of insects would decrease.

• There would be no change in the rest of the chain.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

According to the food web, if the snail population of this ecosystem increases, which of the following is most likely to occur?

• The grass population will increase.

• The grass population will decrease.

• The snails will eventually become extinct.

• The grasshopper population will increase at nearly the same rate.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Why do planets orbit the sun (and not float around in space)?

• the moons are keeping them in place

• They were hit by an asteroid

• they were hit by a comet

• the sun's gravity keeps them in place

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What is matter?

• Anything that has mass and takes up space.

• Only liquids and gases.

• Only solids.

• Energy forms like heat and light.

Tags

DOK Level 1: Recall

What is an ecosystem?

• A single organism and its environment.

• A community of organisms and their physical environment interacting together.

• A type of animal habitat.

• A collection of planets.

Tags

DOK Level 1: Recall

What can you infer about the temperature for E.coli bacterial growth?

• E. coli does not grow well at low and high temperatures.

• E coli will continue to grow at very high temperatures.

• E.coli grows best at very low temperatures

• E.coli grows best at very high temperatures.

Tags

NGSS.MS-LS1-5

Sound is caused by? 

• force

• vibrations

• instruments

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Sound travels FASTEST through which of these materials?

• Air

• Empty space

• Metal

• Water

Tags

NGSS.MS-PS4-2

What is frequency?

• the number of vibrations per second

• how high or low a sound is

• the loudness or softness of a sound

• the back and forth movement of matter

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2