8th Grade Science STAAR Review DOL

What is the basic structural and functional unit of all living organisms?

• cell

• molecule

• organ

• tissue

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What is the process by which plants convert sunlight into energy called?

• Photovoltaic conversion

• Solar energy synthesis

• Sunlight transformation

• Photosynthesis

Tags

NGSS.MS-LS1-6

In a chemical reaction, what are the substances that are present at the beginning called?

• Products

• Catalysts

• Reactants

• Intermediates

What is the law that states that matter cannot be created or destroyed in a chemical reaction?

• Law of Conservation of Mass

• Law of Conservation of Energy

• Law of Entropy

• Law of Thermodynamics

Tags

NGSS.MS-PS1-5

According to Newton's first law of motion, an object at rest will stay at rest unless acted upon by what?

• external force

• internal force

• gravity

• friction

What is the SI unit of force?

• Newton (N)

• Second (s)

• Meter (m)

• Kilogram (kg)

What is the force that pulls objects towards the center of the Earth called?

• repulsion

• centripetal force

• magnetism

• gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What causes the seasons on Earth?

• The tilt of Earth's axis

• The distance from the sun

• The rotation speed of Earth

• The number of clouds in the sky

Tags

NGSS.MS-ESS1-1

What is the name of the force that keeps planets in orbit around the Sun?

• gravity

• friction

• centrifugal force

• magnetism

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What is the layer of the Earth that is made up of tectonic plates called?

• lithosphere

• mantle

• crust

• core

Tags

NGSS.MS-ESS2-3