Free Printable Day 25: Intro to Light EQ

1.

4 = 2x

a)

2

b)

4

c)

8

d)

10

2.

1000 = 0.9x

a)

111.111

b)

1,111.1111

c)

112.333

d)

1156.248

3.

30 seconds = 9 meters (x)

a)

30.25 meters/sec

b)

333.333 meters/sec

c)

333.333 sec/meter

d)

3.333 sec/meter

4.

C = λν, where c is the speed of light (not necessarily a constant because light changes speed depending on the medium it is going through - but we will treat it as a constant in our equations) and it equals 300000000 meters/sec. For this particular problem I am giving you, λ (the length of a wave / wavelength) is 1000 meters. Can you solve for frequency (ν)??

a)

$30\ \frac{m}{s}$

b)

$\frac{300,000}{\sec}\$ or 300,000 Hz

c)

300,000 hours

d)

I cannot do division problems

5.

x * x = ?

a)

idk

b)

x

c)

x²

d)

2x

6.

seconds * seconds = ??

a)

2seconds

b)

seconds²

c)

seconds

d)

eek

7.

$\frac{meters}{meters}$ =??

a)

meters

b)

2meters

c)

$meters^2$

d)

1

8.

$\frac{2}{5}\ \div\ \frac{5}{2}$

a)

$\frac{4}{25}$

b)

$\frac{10}{10}$

c)

$\frac{25}{4}$

d)

1

9.

$\frac{meters}{\sec}\div meters$ =??

a)

meters

b)

1

c)

$\frac{1}{\sec}$ also known as Hertz (a unit for frequency)

d)

seconds

10.

The opposite of addition is subtraction, what is the opposite of division?

a)

derivatives

b)

integrals

c)

multiplication

d)

eek!

11.

Units that we use to describe things (like 20 meters for distance, or $30^{\circ}C$ for temperature) will also follow the rules of mathematics. If I multiply the size of this room together (let's say that its 300 ft by 300 ft) what is the area of the room?

$300\ ft\ \times\ 300\ ft\ =$ ??

a)

90 feet

b)

$90,000\ ft^2$ or 90,000 square feet

c)

200,000 square feet

d)

2 feet

Day 25: Intro to Light EQ

Total questions: 11

Worksheet time: 16mins

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