Which human activities are most disruptive to animals in an ecosystem?

removing natural ecosystems to plant crops.

When Magnesium reacts with Oxygen is more energy given off or absorbed?

Given off mostly as electromagnetic radiation (light energy), Given off mostly as thermal energy (heat)

What wave has particles that move perpendicularly to the direction of the wave?

Surface waves, Transverse waves

Is the statement “All students will sleep in this Saturday” Inference or Evidence?

Inference because it is explaining a conclusion

Water boils,then you turn down the heat.Will the water get hotter if you turn the heat back up?

no,once the H2O reaches its boiling point the temp wont rise

What effect does bird extinction have on food webs?

Insect populations increase without birds eating them

What is commensalism?

One organism benefits while the other is unaffected

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sage review 1

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Questions 20

Answers

1
Which human activities are most disruptive to animals in an ecosystem?
removing natural ecosystems to plant crops.
reducing the number of natural forest fires
spraying crops to control crickets.
controlled hunting of animals
2
When Magnesium reacts with Oxygen is more energy given off or absorbed?
Given off mostly as electromagnetic radiation (light energy)
Given off mostly as thermal energy (heat)
Absorbed mostly as thermal energy (heat)
Absorbed mostly as electromagnetic radiation (light energy)
3
Which of the following is a characteristic of all minerals?
Inorganic
Solid
All the Above
Crystalline Structure
4
What type of heat transfer is occurring at A?
Boiling
Rolling
Convection
Conduction
5
What medium do light waves pass through?
All the above
A Vacuum
Fluids
Solid
6
What type of rock is this?
Igneous
Metamorphic
Foliations
Sedimentary
7
What does the wavelength of a wave indicate?
Crest
Intensity
Loudness
Energy
8
What Characteristic can be tested by rubbing a mineral on your finger nail?
Hardness
Breakage
Luster
Density
9
What is an example of a reaction were more energy is absorbed than given off?
Cellular respiration
Nuclear decay
Photosynthesis
Combustion
10
What wave has particles that move perpendicularly to the direction of the wave?
Surface waves
Longitudinal waves
Transverse waves
Sound waves
11
What is the biggest cause of Climate Change?
Burning fossil fuels
Raising cows
Not recycling
Nuclear bomb testing
12
Humans often cause habitat destruction. What is one of the consequences of habitat loss?
More shopping malls
Organism Extinction
Less wheat
More spiders
13
What is an example of Kinetic Energy
Thermal Energy
Nuclear Energy
Chemical Energy
Gravitational Energy
14
Identify E:
Crest
Peak
Amplitude
Trough
15
What does the term Biodiversity mean?
Studying biology at a university
That biology is divided
All the same or similar organisms
A diverse group of organisms
16
Is the statement “All students will sleep in this Saturday” Inference or Evidence?
Inference because it is based on observation
Evidence because it is explaining a conclusion
Inference because it is explaining a conclusion
Evidence because it is based on observation
17
Water boils,then you turn down the heat.Will the water get hotter if you turn the heat back up?
yes, the temp must be as high as possible to move the atoms.
yes, the temp will rise and the food will cook more rapidly.
no,once the H2O boils, it cant change temp until solids form
no,once the H2O reaches its boiling point the temp wont rise
18
An cold pack is activated, the bag becomes cold. What is this evidence of?
physical change
atomic change
nuclear change
chemical change
19
What effect does bird extinction have on food webs?
Insect populations increase without birds eating them
deer and other primary consumers lose food sources.
humans populations increase without bird populations.
producers decrease because of lost food sources
20
What is commensalism?
It is a organelle in Chlorophyll
It is the process that changes solar energy into mechanical
One organism benefits while the other is unaffected
All the above

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