Unit 6 Review Science

Which type of electricity is made with gravitational potential energy?

• solar

• wind

• geothermal

• hydroelectric

Tags

NGSS.MS-ESS2-4

What is it called when one type of energy changes into another type of energy?

• energy change

• energy transfer

• energy transformation

• energy creation

Tags

NGSS.HS-PS3-3

What does the law of energy conservation say?

• energy can be transformed

• energy cannot be created

• energy cannot be destroyed

• all of these

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-2

What energy transformation happens to keep these eggs warm?

• radiant to thermal

• electric to thermal

• mechanical to thermal

• kinetic to thermal

Tags

NGSS.MS-PS3-3

NGSS.MS-PS1-4

What equation do we use to calculate work?

• work = force + distance

• work = force - distance

• work = force x distance

Calculate the work:

the force is 30N and the distance is 50m

• 80J

• 20J

• 150J

• 120J

How do simple machines make work easier?

• they change the force

• they change the distance

• they increase the work

• they change the force and distance

What type of simple machine is this?

• inclined plane

• screw

• lever

• pulley

Calculate the efficiency: output work = 65J input work = 75J

• 115%

• 78%

• 511%

• 87%

Which of these shows the flow of energy in a food chain?

• decomposer>consumer>plants>producer

• sun>consumers>producers>decomposers

• producers>predators>decomposers>consumers

• sun>producers>consumers>decomposers