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year 8 Science Homework Week 4

Last updated over 4 years ago

15 questions

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Question 1

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Question 2

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Question 3

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Question 4

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Question 5

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Question 6

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Question 7

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Question 8

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Question 9

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Question 10

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Question 11

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Question 12

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Question 13

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Question 14

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Question 15

15.

The change of speed and direction of light as it passes through a medium is called….

Dispersion

Reflection

Refraction

Speculation

When light passes through a more dense medium, what happens to the speed?

It speeds up

It slows down

It stays at a constant speed

When light passes through a less dense medium, what happens to the direction?

It bends away from the normal

It bends towards the normal

It continues in the same direction

Which colour light does a green object absorb

green

blue

all of them

all of them expect green

Which colour light does a red object reflect

red

green

blue

all of them

Which colour light does a blue object reflect

red

green

blue

all of them

Which colour light does a blue object absorb:

red

blue

green

all of them except blue

Which of the following is the correct definition of hydraulics?

Systems where liquids are used to multiply and transfer forces

Systems where solids are used to multiply and transfer forces

Systems where liquids are used to multiply and transfer pressure

The equation that links force, pressure and are is…

force = pressure/area

area = pressure/force

pressure = force/area

What happens to pressure with increasing depth of a liquid?

Decreases

Increases

Stays the same

Light can.............. when it enters a new medium

Change direction

Denser

Normal

stay the same

The change in direction of light when it enters a new medium is called..........

bending

refraction

normal

bends towards the normal

Light travels............... in substances that are denser

faster

slower

changes direction

stops

light................. when it enters and leaves glass

changes direction

bends

less dense

refracts

as light enters the glass it slows down because the glass is ....... than air

more dense

less dense

refracts