8th Grade Unit 1 Review

You want to investigate how the angle of a ramp affects the speed of an object rolling down a ramp.  What type of investigation should you do?

• observe a bicyclist riding down a hill
• record the time it takes one bicyclist to ride down a hill
• perform an experiment in a lab with an angled ramp
• observe a video of objects rolling down hills

Tags

NGSS.MS-PS2-2

Why is a model an effective way to understand the structure of water?

• The structure of water is not really known
• Water is too complex to be understood
• It is too dangerous to observe a water molecule
• Water molecules are too small to be easily seen

Tags

NGSS.MS-PS1-1

How could a store owner apply the engineering design process to solve a shoplifting problem?

• by using video cameras to monitor shoppers
• use automatic timers on bathroom lights
• use scanners to ring up purchases
• use computer software for online purchases

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

A scientific law describes what happens, but a scientific ________________ describes the reason.

• hypothesis
• theory
• conclusion
• thought

A geologist studies_______

• people
• rocks
• animals
• plants

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

What is a basic requirement that a scientific hypothesis must have?

• it must be interesting
• it must be factual
• it must be testable
• it must be correct

Which region of the country has the coldest temperature in January?

• Northeast
• North Central
• South
• West

Tags

NGSS.MS-ESS2-6

What is technology?

• study of the natural world
• The application of science for practical purposes
• A scientific study

All technology is complicated.

• True
• False

Which type of analysis would be most useful to someone buying a television?

• Risk analysis
• cost benefit analysis
• life-cycle analysis
• pugh chart