Multi Science

Question 1

What is a food chain

Answer 1

A path by which energy passes from one living thing to another.
Transfer of energy within an ecosystem.
Producer- plant- gets energy from sun
Consumer- cricket (primary)–> frog (secondary) –> hawk (tertiary)
Decomposer- mushroom
Heat: at the end the energy is in the form of heat

Question 2

Class one lever

Answer 2

Crow bar. The fulcrum is located between the load and the effort. When the fulcrum is closer to the load, you need less effort

Question 3

Class two lever

Answer 3

Wheel barrel. The fulcrum lies at one end. The effort is applied at the other end, and the load is placed in the middle. The closer the load is to the fulcrum, the less force is needed to lift it.

Question 4

Class three lever

Answer 4

Fishing rod. Fish is the load, The beam is the rod, force is the person reeling in the fish using the rods handle at the bottom. The fulcrum is the bottom part of the handle rod.

Question 5

Biome vs Ecosystem

Answer 5

Biome- Large geographical land areas that all share a similar climate- two Ex: tundra and temperate forest
Ecosystem- Local communities they have biotic (living) things like producers consumers and decomposers. They have abiotic (non living) things like dirt air water rocks. It is about how these two things interact with one another.

Question 6

Nicolas Copernicus

Answer 6

Heliocentric theorem. The sun is the center of the solar system

Question 7

Carolus Linnaeus

Answer 7

Classification of organisms (plant and animal life). (Genus and species- We people are homosapiens.

Question 8

Charles Lyell

Answer 8

Geologist- believed world is older than 300 million years by observing geological anomalies. Such as earth breaking down from weathering

Question 9

Robert Hooke

Answer 9

Microbiology. First to view cells (plant cells) Observations of microscopic single cellular organisms. Came up with the term cell.

Question 10

Charles Darwin

Answer 10

Naturalist (evolution). He was influenced from Lyell because you can understand the past from looking at the present.

Question 11

Marie Curie

Answer 11

RADIOACTIVITY. Physicist and chemist. Early research on radioactivity were used to build atomic bombs.

Question 12

Gregor Mendel

Answer 12

Heredity through experiments. Punnent square. Gg= heterogenius, theres a dominant and recessive gene. gg= homogenius

Question 13

Isaac Newton

Answer 13

Math formulas
First- a body at rest stays at rest, a body in motion stays in motion
Second F=M.A
Third: for every action there is an equal and opposite reaction

Question 14

What about water (compound) stays the same from liquid to gas?

Answer 14

Its chemical composition

Question 15

Photosynthesis, Cellular Respiration

Answer 15

Photosynthesis (chloroplast) (just plants):
CO2+H2O+Sunlight–>O2+Glucose
Cell Respiration (mitochondria) (in both plants and animals):
O2+Glucose–>CO2+H2O+Energy

Question 16

Two ways to make a car go faster other than changing the engine

Answer 16

1. reduce the surface area

2. reduce the mass

Question 17

Why is it hotter directly above the candle?

Answer 17

Because of a convection current

Question 18

Why does it rain as warm air off the ocean rises to higher altitudes?

Answer 18

As it comes off the surface of the water and goes up in elevation air pressure decreases water molecules cool and they come down as rain.

Question 19

Two types of biomes

Answer 19

Aquatic- freshwater (pond)
Terrestrial- temperate forest (our land). Four seasons. Moderate rainfall. Moderate light for biodiversirty. (Desert also example, one season, very little can survive)

Question 20

Write about tundra biome

Answer 20

Terrestrial biome
TUNDRA: 
1. Extremely cold climate
2. Low biotic diversity (mice, rodents)
3. Simple vegetation (grass, shrubs) (decomposer=bacteria in river)
4. Limitation of drainage
5. Short growing season

Question 21

Write about temperate forest biome

Answer 21

Terrestrial biome

1. Temperate climate
2. warm summer cold winter
3. Moderate biotic diversity
4. Coniferous trees (pine), deciduous trees (oak, maple)
5. Closer to water/ heavy rain fall
6. Closer to mountains/ dry

Question 22

What is the difference between a eukaryote and prokaryote cell

Answer 22

EUKARYOTE- has nucleus

PROKARYOTE- no nucleus

Question 23

How does carbon dioxide and water enter the leaf during photosynthesis

Answer 23

CO2- STOMATA- holes under the leaf and CO2 goes to the chloroplast
H2O- the roots

Question 24

Why is the top layer of the leaf made of lipids and is waxy

Answer 24

It retains water so it doesn’t evaporate

Question 25

Which position of the moon is going to get you the greatest tide?

Answer 25

Sun-Earth-Moon

All in a line

Question 26

Two types of ecosystems

Answer 26

Temperate Deciduous Forest Ecosystem
Living things:
Producers: Deciduous trees -ex, maple trees, oak trees. 
Primary consumers: caterpillars, ants. 
Secondary consumer: birds. 
Tertiary consumer: hawk, owl. 
Decomposers: fungus, bacteria in soil
Non-living:
Sun, rocks, soil, water, air

Freshwater Aquatic Ecosystem
Livings things:
Producers: Algae
Primary consumer: small fish
Secondary consumer: larger fish
Tertiary consumer: turtle
Decomposer: bacteria and fungus  
Non living:
Water, rocks