Multiplying decimals
Area or Volume
Multiplication
Ecosystems
Other Science Review
100

1.1 x 2.2 =

2.42

100

What is the volume?


24 cm2

100

5 x 12 = 

60

100

which ecosystem am I describing:

- Plants grow low to the ground and have long roots

- Temperatures are harsh and frigid

-Majority of the worlds freshwater is found here

Arctic Ecosystem

100

Which of the following statements is correct:

  1. Gravity is a contact force that is sometimes affecting us

  2. With every action force, there is an equal and opposite reaction

  3. Something with the property of elasticity can be molded and shaped

  4. It is better to have a closed truss than an open truss when designing structures


2) With every action force, there is an equal reaction

200

4.7 x 5.6 =

26.32

200

A square has an area of 81 m. How long is each side?


9 m

200

16 x 3

48

200

Why are decomposers important in an ecosystem?

Decomposers break down organic matter and provide nutrients for the soil.

Without decomposers, plants would lack proper nutrients and there would be too much organic waste in the world

200

What changes when water evaporates?

a) taste

b) mass

c) volume

d) colour

c) volume

300

3.4 x 4.67

15.878

300

A box is 14 cm tall, 3 cm deep, and 2 cm wide.

What is the volume of the box?

84 cm3

300

32 x 45 =

1 440

300

Describe a specific abiotic/biotic relationship within the desert ecosystem

Animals burrow in the sand

300

What is the force that opposes motion between

two surfaces?

Friction

400

17.22 x 16.1

105.042

400

What is the total area?


400 ft2

400

87 x 543 = 

47, 241

400

Which ecosystem is referred to as "Earth's sponges" and why?

Wetlands

Wetlands absorb carbon dioxide like a sponge 

400

What is the greenhouse effect? How does it work and how does it connect to climate change?

The greenhouse effect is the trapping of the sun's warmth in a planet's lower atmosphere. The most heat that is trapped, the warmer the planet gets

500

123.07 x 45.789

5, 635.25223

500

Determine the height of a triangle If it has an area of 80 m2 and a base of 10 m.

height = 16 m

500

563 x 611

343 993

500

Explain the process of photosynthesis

Co2, sunlight and Water ---> chloroplasts in the leaves ----> O2 and glucose

500

The mass of an object changes by

a) Adding heat

b) Adding volume

c) Removing heat 

d) Adding matter

d) Adding Matter