MCAS Review

Question 1

When bedrock is examined in MA, it often appears scraped and polished. Why?

Accepted Answer

Glacial movement

Question 2

Sugar is composed of carbon, hydrogen,and oxygen.Sugar is an example of which of the following?

Accepted Answer

A mixture

Question 3

Which of the statements BEST describes one way that the Moon is different from the Earth?

Accepted Answer

The moon has almost no atmosphere

Question 4

A stone arch bridge relies PRIMARILY on which of the following for its load strength?

Accepted Answer

Compression

Question 5

How is a skin cell from a mouse similar to an amoeba?

Accepted Answer

Both need energy

Question 6

Which of the following is an example of a container that is filled with a pure substance?

Accepted Answer

A balloon filled with helium

Question 7

Seafloor spreading provides evidence of which of the following of Earth processes?

Accepted Answer

Movement of crustal plates

Question 8

Which of the following tools is most useful for tightening a small mechanical fastener?

Accepted Answer

Pliers

Question 9

Which of the following is an example of the formation of a mixture?

Accepted Answer

Sugar crystals dissolving in water

Question 10

Which of the following is an example of a physical change but not a chemical change?

Accepted Answer

A water pipe freezes and cracks on a cold night

Question 11

How long does it take the Earth to make one complete orbit around the sun?

Accepted Answer

1 Year

Question 12

Which of the following units BEST represents the density of an object?

Accepted Answer

g/cm3

Question 13

What the following is the PRIMARY function of a radio station tower in a communication system?

Accepted Answer

Decoder

Question 14

Which of the following is produced when two or more elements combine in a chemical reaction?

Accepted Answer

Compound

Question 15

The presence of what feature provides the BEST evidence that glaciers once covered an area?

Accepted Answer

U-shaped valleys

Question 16

Which phase has the least energy?

Accepted Answer

Solid

Question 17

What are two elements chemical combined?

Accepted Answer

Compound

Question 18

The picture below shows a paramecium. In which kingdom is the paramecium classified?

Accepted Answer

Protista

Question 19

Heat from deep in the Earth's interior is transferred to its crust by which of the following?

Accepted Answer

Convection in the mantle

Question 20

Which of the following keeps the planets in our solar system in orbit around the Sun?

Accepted Answer

Gravitational force

Question 21

These pictures show two dogs. The instructions that determine coat color are stored in the:

Accepted Answer

Chromosomes of every cell

Question 22

Which of the following is not present in animal cells?

Accepted Answer

Cell Wall

Question 23

Warm air masses rise over Earth's equator and move north or south.This is primarily because of?

Accepted Answer

Convection

Question 24

What is the smallest part of an element with the properties of that element?

Accepted Answer

Atom

Question 25

Which of the following causes a ship's iron anchor to sink to the ocean floor?

Accepted Answer

Gravity

Question 26

Which layer of the earth is composed PRIMARILY of solid iron?

Accepted Answer

Core

Question 27

Which statement best explains why stars appear to move across the sky at night?

Accepted Answer

Earth rotates on its axis

Question 28

Substances enter any plant or animal cell by passing through which of the following structures?

Accepted Answer

Cell Membrane

Question 29

The complete removal of decomposers from an ecosystem will have the GREATEST effect on what?

Accepted Answer

The recycling of nutrients

Question 30

Most of the bacteria in a forest ecosystem are best classified as which of the following?

Accepted Answer

Decomposers

Question 31

What is the smallest part of a compound with the properties of that compound?

Accepted Answer

Molecule

Question 32

Which of these statements BEST explains why it is warmer at the equator than the North Pole?

Accepted Answer

The equator receives more direct sunlight than North Pole

Question 33

Which of the following is ALWAYS closer to the Sun than it is to earth?

Accepted Answer

Mercury

Question 34

Which phase has the most energy?

Accepted Answer

Gas

Question 35

What is the density of water?

Accepted Answer

1 g/ml

Question 36

Based on the diagram, which season is occurring in the southern hemisphere?

Accepted Answer

Summer

Question 37

Which heat transfer is through currents of rising and falling air?

Accepted Answer

Convection

Question 38

A natural process is represented in the box below. What is it?

Accepted Answer

Photosynthesis

Question 39

Which of the following is a characteristics of ALL chemical changes?

Accepted Answer

A new material is formed

Question 40

Which of the following BEST describes the function of an encoder in a telephone?

Accepted Answer

Converting sound to electrical impulses

Question 41

Which heat transfer occurs through empty space?

Accepted Answer

Radiation

Question 42

My mass is 65kg. What is my mass on the moon?

Accepted Answer

65 kg

Question 43

Which of the following organisms produces energy from sunlight?

Accepted Answer

Grass

Question 44

What's the smallest unit of a chemical compound that still has the properties of that compound?

Accepted Answer

Molecule

Question 45

What is the equation for density?

Accepted Answer

D= M/V

Question 46

Which of the following BEST describes photosynthesis?

Accepted Answer

Carbon dioxide and water are turned into sugar and oxygen

Question 47

Which is the BEST description of the result of using interchangeable parts to manufacture cars?

Accepted Answer

The cars can be produced on an assembly line

Question 48

Which phase has medium energy?

Accepted Answer

Liquid

Question 49

Which heat transfer is through direct contact?

Accepted Answer

Conduction

Question 50

Which of the following is the best estimate of the number of stars in a typical galaxy?

Accepted Answer

Billions

Question 51

Which of the following correctly lists the structures in space from smallest to largest?

Accepted Answer

star, solar system, galaxy, universe

Question 52

Which of the following best describesthe purpose of the chromosomes in the nucleus of the cell?

Accepted Answer

To store the genetic instructions needed to specify traits

Question 53

What is the primary energy source that drives all weather events, including rain and tornados.

Accepted Answer

The Sun

Question 54

If a new organism were discovered, which of the following would most be used to classify it?

Accepted Answer

The structure of the organism's anatomy

Question 55

Which of the following provides the BEST evidence that Earth has evolved over geologic time?

Accepted Answer

Rock containing fossilized seashells found on a mountaintop

Question 56

What is the amount of matter in an object?

Accepted Answer

Mass

Question 57

Which of the following BEST describes a role of mushrooms in ecosystems?

Accepted Answer

Breaking down dead plant materials

Question 58

Which of the following is most effective in reducing air traffic congestion at a busy airport?

Accepted Answer

Increasing the number of runways at the airport

Question 59

What changes with gravity?

Accepted Answer

Weight

Question 60

If a solid object is taken from Earth far into space, which of the following will change?

Accepted Answer

Weight

MCAS Review

Questions 60

MCAS Review

Questions 60