Quiz about Block 4

Question 1

A rock formed from fragments of other rocks is a(n)

Accepted Answer

Sedimentary Rock

Answer

Metamorphic Rock

Answer

Extrusive Rock

Answer

Igneous Rock

Question 2

If heat and pressure inside the Earth cause a rock to melt, the material that formed would be

Accepted Answer

Magma

Answer

Metamorphic

Answer

Sedimentary

Answer

Igneous

Question 3

As lava cools and crystallizes, what type of rock will form?

Accepted Answer

Extrusive Igneous

Answer

Sedimentary

Answer

Metamorphic

Answer

Intrusive Igneous

Question 4

The three groups of rocks are classified by

Accepted Answer

How they form

Answer

Color

Answer

Grain size

Answer

Chemical Composition

Question 5

Fossils are only found in

Accepted Answer

Sedimentary rocks

Answer

Foliated Metamorphic rocks

Answer

Igneous Rocks

Answer

Nonfoliated Metamorphic rocks

Question 6

What is underground molten rock?

Accepted Answer

Magma

Answer

Lava

Answer

Soil

Answer

Intrusive

Question 7

What is aboveground molten rock?

Accepted Answer

Lava

Answer

Extrusive

Answer

Magma

Answer

Sedimentary

Question 8

Limestone is an example of...

Accepted Answer

Sedimentary

Answer

Igneous

Answer

Metamorphic

Question 9

Sandstone is an example of...

Accepted Answer

Sedimentary

Answer

Metamorphic

Answer

Igneous

Question 10

Granite is an example of...

Accepted Answer

Igneous

Answer

Metamorphic

Answer

Sedimentary

Question 11

Marble is an example of...

Accepted Answer

Metamorphic

Answer

Igneous

Answer

Sedimentary

Question 12

Basalt is an example of...

Accepted Answer

Igneous

Answer

Sedimentary

Answer

Metamorphic

Question 13

Obsidian is an example of...

Accepted Answer

Igneous

Answer

Sedimentary

Answer

Metamorphic

Question 14

When large rocks are broken down into smaller parts by physical and chemical means

Accepted Answer

Both

Answer

Weathering

Answer

Erosion

Answer

Neither

Question 15

The process when rocks break into smaller pieces due to exposure to natural elements is called

Accepted Answer

weathering

Answer

cementation

Answer

sediments

Question 16

The name rock is given when it is broken down into smaller pieces.

Accepted Answer

sediment

Answer

texture

Answer

weathering

Answer

erosion

Question 17

Which rock is formed form the cooling of volcanic ash on Earth's surface?

Accepted Answer

igneous

Answer

metamorphic

Answer

sedimentary

Question 18

Any rock that forms from another rock as a result of changes in heat or pressure (or both) is a:

Accepted Answer

metamorphic rock

Answer

chemical rock

Answer

igneous rock

Answer

sedimentary rock

Question 19

This rock was formed by smaller pieces of rock that settled at the bottom of a lake millions of years ago. What type of rock is this?

Accepted Answer

Sedimentary

Answer

Igneous

Answer

Metamorphic

Question 20

Which type of rock is made from lava or magma cooling?

Accepted Answer

igneous

Answer

sedimentary

Answer

metamorphic

Question 21

Which type of rock is made by small bits of rock, mud, or sand compacted and cemented together?

Accepted Answer

sedimentary

Answer

Coal

Answer

igneous

Answer

metamorphic

Question 22

Click the statement that is true.

Accepted Answer

Thermal (heat) energy transfers from the warmer object to the cooler object.

Answer

Thermal (heat)energy transfers from the cooler object to the warmer object.

Answer

Thermal (heat) energy does not transfer at all.

Question 23

What is an example of a good insulator?

Accepted Answer

wood

Answer

copper wiring

Answer

stones

Answer

concrete floor tiles

Question 24

What is an insulator?

Accepted Answer

a material that heat does not move through easily

Answer

a material that heat moves through easily

Answer

a material that turns cold when heated

Answer

a tool for measuring temperature

Question 25

What type of insulation is this?

Accepted Answer

Double glazing

Answer

Loft insulation

Answer

Cavity wall

Answer

Draught proofing

Question 26

What does insulation do?

Accepted Answer

Slow down heat transfer out of your house

Answer

100% stops heat transferring out of your house

Answer

Heats your house up

Question 27

What doe the fibers of loft insulation do?

Accepted Answer

Trap air

Answer

Tickle your feet

Answer

Heat the floor

Question 28

What type of insulation is this?

Accepted Answer

Cavity wall insulation

Answer

Double glazing

Answer

Loft insulation

Question 29

Conduction happens fastest in..

Accepted Answer

solids

Answer

liquids

Answer

gases

Answer

liquids and gases

Question 30

What is the equation used to calculate pressure?

Accepted Answer

pressure=force/area

Answer

pressure= force/mass

Answer

pressure =mass/volume

Answer

pressure=area/force

Question 31

Pressure decreases when the surface area over which a force is applied increases

Accepted Answer

True

Answer

False

Question 32

Atmospheric pressure increases as you climb up a tall mountain

Accepted Answer

True

Answer

False

Question 33

Which of the statements is true?

Accepted Answer

The bottom of the shoe exerts more pressure than the boot as a result of an decrease in surface area.

Answer

The bottom of the boot exerts more pressure than the shoe as a result of an increase in surface area.

Answer

The bottom of the shoe exerts the same pressure as the bottom of the boot.

Question 34

What pressure does a 4000N horse exert on the ground if each foot is 10cm²?

Accepted Answer

100 N/cm2

Answer

40 N/cm2

Answer

400 N/cm2

Answer

10 N/cm2

Question 35

If the horse reared up on 2 legs what effect would it have on the pressure?

Accepted Answer

it will exert twice the pressure it did before

Answer

it will exert half the pressure it did before

Answer

it will exert the same pressure it did before

Answer

it will exert four times the pressure it did before

Question 36

This is an example of the everyday application of pressure in:

Accepted Answer

Gases

Answer

Solids

Answer

Liquids

Answer

Plasma

Question 37

When you increase your depth under water, the water pressure on your body

Accepted Answer

increases

Answer

decreases

Answer

stays the same

Question 38

What decreases as you go up in the atmosphere?

Accepted Answer

Air Pressure

Answer

Altitude

Answer

Atmosphere

Answer

Meteors

Question 39

How do you Calculate Pressure

Accepted Answer

Force(N)/Area(m²)

Answer

Force(kg)/Area(mi²)

Answer

Area(m²)/Force(N)

Question 40

Why won't you sink in mud if you wear boots?

Accepted Answer

Because the surface area is larger creating less pressure.

Answer

Has air in it to keep you floating.

Answer

Because the mud won't want you.

Question 41

We use levers to make work easier.?

Accepted Answer

True

Answer

False

Question 42

What is the anticlockwise moment acting on this crane?

Accepted Answer

100,000Nm

Answer

80,000Nm

Answer

120,000Nm

Answer

140,000Nm

Question 43

Unit of force.

Accepted Answer

Newton

Answer

Meter

Answer

Centimeter

Question 44

What is the moment acting on the seesaw?

Accepted Answer

1.6Nm

Answer

15Nm

Answer

16N

Answer

4Nm

Question 45

What is the moment produced by the 15 N?

Accepted Answer

1.5 Nm (anti - clockwise)

Answer

15 Nm (clockwise)

Answer

150 Nm (anti - clockwise)

Answer

0.15 Nm (clockwise)

Question 46

A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?

Accepted Answer

Moving the smaller person further from the center.

Answer

The larger person moving further away from the center.

Answer

Moving the smaller person closer to the center.

Answer

Making the larger person do nothing.

Question 47

The easiest way to open a heavy door  is by applying the force

Accepted Answer

At the edge of the door far from the hinges

Answer

Near the hinges

Answer

In the middle of the door

Answer

At the top of the door

Question 48

Two masses of mass 10.0 and 6.0 kg are hung from massless strings at the end of a light rod. The rod is virtually weightless. A pivot (fulcrum) is placed off center and the system is free to rotate. If the 6.0 kg mass is 4.0 m away from the pivot, how far away is the 10.0 kg mass if the system is not rotating?

Accepted Answer

2.4 m

Answer

0.42 m

Answer

4.8 m

Answer

4.2 m

Question 49

A wrench is used to tighten a nut. A 15N perpendicular force is applied 50cm away from the axis of rotation, and moves a distance of 10 cm as it turns. What is the torque applied to the wrench?

Accepted Answer

7.5 Nm

Answer

1.5 Nm

Answer

750 Nm

Answer

150 Nm

Question 50

A nut can be loosened more easily with

Accepted Answer

a long spanner because a larger turning effect can be produced.

Answer

a short spanner because a larger turning effect can be produced.

Answer

a long spanner because a larger force can be produced.

Answer

a short spanner because a larger force can be produced.

Question 51

The figure below shows a man lifting a heavy rock using a steel bar. He pushes downwards on the end of the bar with a force F.

Which pivot positions allows the force F to be as small as possible?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 52

A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?

Accepted Answer

450 N

Answer

350 N

Answer

4.5 N

Answer

200 N

Question 53

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

Accepted Answer

Add more coils of wire to the nail.

Answer

Use a smaller battery.

Answer

Reverse the poles of the magnet.

Answer

Remove all the coils and the nail.

Question 54

What kind of magnet can be turned on and off?

Accepted Answer

electromagnet

Answer

refridgerator magnet

Answer

magnetite

Answer

iron

Question 55

In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.

Accepted Answer

electric, wire, iron

Answer

wire, iron, electric

Answer

iron, electric, wire

Answer

excited, hair, apple

Question 56

What is most likely to happen when the switch is closed?

Accepted Answer

A magnetic field should be produced

Answer

The nail will rust

Answer

The battery will explode

Answer

The wire will catch on fire

Question 57

How do electromagnets differ from regular magnets?

Accepted Answer

D. All of the above

Answer

A. They  can be turned off and on

Answer

B. Their polarity can be reversed

Answer

C. Their strength can be changed

Question 58

Why are paper clips attracted to magnets?

Accepted Answer

They contain iron.

Answer

They contain silver.

Answer

They contain aluminum

Answer

They contain tin.

Question 59

How can the strength of an electromagnet be increased? (mark all that apply)

Accepted Answer

increase the current flowing through the coil

Accepted Answer

increase the number of coils

Accepted Answer

put iron core inside the coil

Answer

add an amplifier to it

Question 60

An electromagnet is a magnet that

Accepted Answer

its strength can be varied and turned on and off

Answer

always has a magnetic field around it

Answer

has very little strength

Question 61

Which will heat up faster?

Accepted Answer

copper

Answer

granite

Answer

iron

Answer

basalt

Question 62

If I heat up 2 pans of water one has 100 mL in it and one has 1000mL. Which one heats up the fastest?

Accepted Answer

100 mL

Answer

1000 mL

Answer

They both heat up at the same speed

Answer

They cool down.

Block 4

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