Light
Sound
Ecosystems
Contact forces
240

When light hits a rough surface. What does it do?

Scatter

240

What does the height of the wave mean

amplitude 
240

Give 3 examples of producers 

plants, trees, algae,  

240

What is Newtons 1st law of motion 

An object will not move unless a force is upon it

340

When light hits a smooth surface what does it do?

Reflect

340

What does many  waves mean 

High frequency 

340

Give 3 examples of a apex predator 

Hawk, Wolf, bear

340

What is newtons 2 law of motion 

An objects force is mass x acceleration 

400

What absorts light

O'Que objects  

400

What is the top of the wave called 

Crest

400

What is the role of decomposers 

To break down dead organisms and release their nutrients into the soil 

400

What is Newtons 3rd law 

2 object have the same force but opposite direction  

534

How does light travel 

A straight line

534

What is the bottom of the wave called 

trough

534

3 examples of primary consumers 

cricket,Rabbit,deer

534

which has more mass the brick or the leaf 

brick 

600

What does light not be diminished when put in a chamber

Light does not need particles to be seen

600

What is wavelength 

Wavelength is how far is one crest is from another 

600

What are food webs 

Links of food chains 

600

What is gravity 

An unknown force that pulls objects with mass down to the center of the earth. 

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