G7 Science Review (3.18)

A scientist heats a solid material until it melts. Which statement best describes what happens to the particles of the material during melting?

• A. They stop moving entirely.

• B. They spread out and move more freely.

• C. They lose energy and move closer together.

• D. They disappear and reform as new matter.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If two clear solutions are combined and a new, bright-yellow solid forms at the bottom of the beaker, which conclusion can be drawn?

• A. A physical change occurred; the solid just separated out.

• B. A chemical reaction occurred; a new substance formed.

• C. No reaction occurred; everything remains the same substance.

• D. The color was caused by an increase in temperature.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When constructing a scientific argument, which of these best represents the 'Reasoning' part?

• Measurements collected in a data table

• A statement that answers the main question

• A scientific principle or logic linking evidence to the claim

• A prediction of what might happen under new conditions

Tags

NGSS.MS-PS2-4

Which factor is most important for determining the overall health of a stream ecosystem?

• The stream’s depth

• The color of the rocks in the stream

• The types and variety of organisms living there

• The shape of the stream banks

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS2-5

Why do coastal areas often have milder temperatures than inland areas at the same latitude?

• Ocean water retains heat, moderating temperature changes.

• Coastal areas always receive less sunlight.

• Mountains trap warmer air near the coast.

• The air at the coast never contains moisture.

Tags

NGSS.MS-ESS2-6

Earth's plates move because of convection currents in which layer?

• Inner core

• Outer core

• Mantle

• Crust

Tags

NGSS.MS-ESS2-3

Which process is primarily responsible for forming sedimentary rock over time?

• Cooling and solidification of magma

• Heat and pressure in Earth’s mantle

• Deposition and compaction of sediments

• Melting of rock into liquid form

Tags

NGSS.MS-ESS2-4

A balloon is rubbed on a student’s hair. The balloon becomes negatively charged and sticks to the wall. This is an example of (a)  

• Magnetic force
• Electrostatic attraction
• Chemical bonding
• Gravity

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student shines a flashlight onto a mirror at a 45° angle. The reflected beam (a)  

• Disappears into the mirror’s surfac
• Reflects back at 45° on the other s
• Passes straight through the mirror.
• Bends upward at a 90° angle.

Tags

NGSS.MS-PS4-2

Which observation best supports the idea that Earth orbits the Sun?

• Daily sunrise and sunset

• Phases of the Moon over a month

• Seasonal changes in constellations visible at night

• Changing shapes of Earth’s shadow during an eclipse

Tags

NGSS.MS-ESS1-2