8th Grade Science Review-Part 1

What is an independent variable?

• the part of the investigation being changed

• the outcome

• the control

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What is the dependent variable?

• the part of the investigation being changed

• the outcome

• the control

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What do you do to test a hypothesis?

• make a guess

• design an experiment

• publish a research paper

• create a graph and plat the data

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

Why should experiments be repeated at least 3 times?

• to show validity

• to increase reliability

• to show other people your results

• because it's fun to do Science experiments

Tags

NGSS.MS-PS1-2

______ is a force that causes dust particles to stick together in a nebula.

• nuclear fusion
• gravity
• hydrogen
• iron

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Stars are formed in a large cloud of gas and dust called a

• cumulonimbus cloud
• nebula
• neutron star
• black hole

What is the composition of most comets?

• rock, ice, salt carbon
• rock, ice magma, frozen gases
• ice, dust, rock, frozen gases
• ice, dust, rock, soil

Tags

NGSS.MS-PS1-1

Which of the following describes an asteroid?

• Composed of a nucleus, tail, and coma
• Orbit the sun like a planet
• Have an elliptical orbit of the sun
• Shooting star

Tags

NGSS.MS-ESS1-3

Scientists use the light-year to describe the relationships between objects in space. What does a light-year measure?

• the distance that light can travel in one year

• the brightness of light that travels through space

• the number of years it takes light to travel to Earth

• the time it takes light to travel 1 million km

Space and all the matter and energy in it.

• Space
• Solar System 
• Universe
• Sun

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3