Eight Point Five

A natural change to an ecosystem occurs when

• A severe drought causes a plant to die

• trees are cut down to make paper

• we play Quiziz

• roads are built through a forest

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Why is the base of an energy pyramid larger than the top?

• organisms at the top produce energy for organisms at the bottom

• organisms at the top use less energy than organisms at the bottom

• Organisms prefer the bottom

• energy is lost as heat at each level so less energy is available at the top

Tags

NGSS.MS-LS2-3

Clearing prairies to plant crops is a negative change to ecosystems because

• people plant trees to replace the ones they cut down

• the way organisms interact in food webs is disrupted

• It isn't negative

• humans are using the land to build farms instead of homes

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

How would climate change affect a polar bear?

• Polar ice caps are melting. With less ice polar bears are having difficulty finding food.

• Polar ice caps are getting colder. With more ice caps there is less water access

• The polar bears are enjoying the warmer weather.

Tags

NGSS.MS-LS2-4

Lines joining places on a map that have the same air pressure

• isobar

• isotherm

• air pressure

• anticyclone

A sudden spark of electrical discharge, as charges jump between parts of a cloud

• anticyclone

• thunder

• storm

• lightning

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A huge body body of air in the lower atmosphere that has similar temperature, humidity, and air pressure at any given height

• front

• storm

• air mass

• occluded

Tags

NGSS.MS-ESS2-5

Which substance is formed by the carbonisation of dead vegetation

• Coal

• Coal gas

• Coke

• Coal tar

What is the pH value of a solution that is considered neutral?

• 7.0

• 8.5

• 6.5

• 9.0

Which of the following pH values indicates a basic solution?

• 3.5

• 7.0

• 8.5

• 5.0