Science Test Review

This variable in an experiment is the one being deliberately changed by the scientist.

• dependent variable

• independent variable

• data

• control group

What step does every scientific experiment begin with?

• hypothesis

• question/problem/purpose

• procedures

• conclusion

The summary at the end of an experiment that explains the results.

• conclusion

• procedures

• materials

• responding variable

At which point is potential energy greatest?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2

Which is the best example that something has kinetic energy?

• a. a car parked on a steep hill

• b. a tennis ball rolling across the court

• c. a picture hanging on the wall

• d. a piece of coal before it's burned

Tags

NGSS.MS-PS3-1

What kind of energy is in a moving skateboard?

• Potential

• Kinetic

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Fossil Fuels are

• pieces of rock that have been compacted many times

• rock that contains 50% plant and animal remains

• metamorphic rock

• fuels that form from the remains of plant and other organisms that were buried and altered over million of years

Tags

NGSS.MS-ESS3-1

Coal is formed from

• rocks

• a factory

• remains of small organisms that lived many millions of years ago in our oceans

• plant remains along with heat and pressure

Why is solar energy considered renewable energy?

• It's cheaper than fossil fuels

• The sun's energy would not run out for billions of years
  

• Solar energy recharges batteries

• All of them

A insect like a water strider can skate along the top of a pond because:

• covalent bonds result in water cohesion

• hydrogen bonds result in water cohesion (surface tension)

• low surface tension of water