Matter and Energy

What determines whether matter is a solid, liquid, or gas?

• Speed of atoms or molecules

• color

• number of elements

• smell

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-4

A student observed steam rising from the pot of boiling water. The molecules in the

steam are —

• moving very slowly as they rise

• packed tightly and barely moving

• spread apart and moving very fast

• packed tightly and moving a little

Tags

NGSS.MS-PS1-4

When stirred together, which two substances form a solution?

• Sand and salt

• Sugar and salt

• Sand and water

• Sugar and water

Two students wanted to find out how mass impacts motion. They obtained toy cars, pushed each car down a ramp, and then measured how far each car rolled. Which of these should be held constant if they want a fair test?

• The mass of the cars

• The length of the ramp

• The distance each car traveled

• The color of the cars

Answer explanation

Constant means stays the same. If you change the ramp then you can't test fairly how fast it goes down it.

Tags

NGSS.MS-PS2-2

Which organism in this food chain would have the most energy?

• Grass

• Grasshopper

• Frog

• Python

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

An organism that makes its own food through photosynthesis is called...

• Consumer

• Producer

• Heterotroph

• Decomposer

Tags

NGSS.MS-LS1-6

How much energy is passed from one trophic level to the next?

• 10%

• 50%

• 90%

• 100%

Tags

NGSS.MS-LS2-3

What is the source of all energy? 

• producers

• sun

• consumers

• decomposers

A food chain shows how _____ moves through an ecosystem

• matter

• food

• energy

• atoms

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

This diagram is an 

• food chain

• food web

• energy pyramid

• energy cycle

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3