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Energy transfers and questions from Topic 1

Last updated 3 months ago

61 questions

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Question 6

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1.Calculate the mean from the following. Give answer to 1 decimal place:
2.2 2.8 3.5

Question 7

7.

The transfer of thermal energy through a substance by the vibration of particles is?

1. Convection
2. Conduction
3. Radiation
4. Insulator

Question 8

8.

A substance that does not easily transfer thermal energy e.g. rubber, is named?

1. Convection
2. Conduction
3. Radiation
4. Insulator

Question 9

9.

A substance that does allow thermal energy to pass through e.g. copper, is named?

1. Convection
2. Conductor
3. Radiation
4. Insulator

Question 10

10.

________ is the transfer of thermal energy from hot to cold places by the rise of particles in a fluid.

1. Convection
2. Conduction
3. Radiation
4. Insulation

Question 11

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How does the energy of the sun reach Earth?

1. Convection
2. Conduction
3. Radiation
4. Insulation

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Energy can be ……

a)Created

b)Transferred

c)Destroyed

What energy store is in a cup of hot tea

a) Thermal

b) Nuclear

c) Gravitational

d) Chemical

The units for energy are

a) Newton’s

b) Joules

c) Jewls

d) Seconds

What energy store is in ball before it is dropped to the ground

a) Electrostatic

b) Chemical

c) Gravitational

d) Kinetic

What energy store is in a battery?

a) Nuclear

b) Chemical

c) Kinetic

d) Gravitational

Roasting marshmallows over a fire is an example of-

Conduction

Convection

Radiation

An ice cube melting in your hand is an example of-

Conduction

Convection

Radiation

Ironing clothes is an example of-

Conduction

Convection

Radiation

The liquid moving in a lava lamp is an example of-

Conduction

Convection

Radiation

Heat from the sun warming your face is an example of-

Conduction

Convection

Radiation

Warming your hands on a cup of hot cocoa is an example of-

Conduction

Convection

Radiation

Energy cannot be...

Wasted or useful

Created or destroyed 

Stored or transferred 

Which equipment would you use to measure 93ml of water?

Beaker 

Newton Meter 

Measuring cylinder 

What is the correct definition of efficiency?

A measure of the total amount of energy

A measure of the amount of energy that is usefully transferred

A measure of the amount of energy that is usefully stored

State the equation used to calculate efficiency

Efficiency = useful energy / wasted energy

Efficiency = wasted energy / total energy

Efficiency = useful energy / total energy

If a kettle has an efficiency of 0.875, what is this efficiency written as a percentage?

87.5%

8.75%

875%

     
Which of the blocks shown would not move when exposed to the forces ?

Block   C

Block   D

Block   A

Block   B

     
The ball in Scenario D is moving at the same speed as the ball in Scenario A. This is because 

the ball in Scenario D must have unseen forces acting on it.

the ball in Scenario D has a smaller diameter, but it is the same weight as the ball in Scenario A.

the surface in Scenario D is lubricated.

the relationship of force to mass are the same in both scenarios.

The best way to counteract momentum is by _____________________.

A  friction.

B  braking.

C  accelerating.

D  jumping.

What is the unit for momentum?

A  kg m/s

B  newtons

C  m/s

D  kg

What is momentum?

A   A push or pull on an object.

B  The velocity an object moves.

C  A measure of an object's motion and the likelihood that it will remain in motion.

D  The heaviness of an object and the direction in which the object is moving.

As the mass increases, the amount the spring stretches…

decreases

increases

stays the same

When we stretch a spring, the force acting through it is…

gravitational force

elastic force

tension

When hot air rises, this is an example of...

Conduction

Convection

Radiation

Refraction

You accidentally touch a hot stove and burn your hand. This is an example of...

Radiation

Convection

Refraction

Conduction

The metal part of the seat belt burns your leg when you sit on it after the car
sat in the sun all day is an example of...

Radiation

Conduction

Refraction

Convection

How do you get a sun burn?

Conduction

Radiation

Convection

Refraction

A hot air balloon moving up and down in the sky is an example of-

Conduction

Convection

Radiation

Which of the following is NOT an example of matter?

Beaker

Soda

Air

Light

Which of these statements is true for potential and kinetic energy?

Both depend on mass

Both potential and kinetic energy have to do with motion

Both potential and kinetic energy are a form of electricity

Both potential and kinetic energy are stored

An illustration of a roller coaster is provided. At which point in the roller coaster's journey along the track does it have the greatest kinetic energy?

W

X

Y

Z

A book is sitting on a shelf. How could you decrease the potential energy of the book?

Move it to a lower shelf

Move it to a higher shelf

Open it to the middle

Slide it along the shelf

An object's potential energy would be most influenced by which of the following:

Kinetic energy

Temperature

Acceleration

Mass

What type of electromagnetic wave are we observing when we (humans) see colors?

Gamma waves

Visible light

X-rays

Infrared waves

Sound can travel through outer space.

True

False

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Question 51

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Which word means  energy in motion?

A kinetic energy

B potential energy

C friction

D gravity

Which word means how fast an object is moving? 

A speed

B push 

C gravity

D force

Which word means stored energy an object has because of its position ?

A kinetic energy

B potential energy

C friction

D gravity

Which word means force that pulls objects to Earth  ?

A kinetic energy

B potential energy

C friction

D gravity

What is friction?

A  the ability to do work, either to make an object move or to change matter 

B  force between surfaces that resists the motion of one surface past another surface; friction creates heat 

C  an object’s direction and speed 

D  Scientist who came up with 3 laws of motion; also the unit used to measure the amount of force applied 

What is energy?

A  the ability to do work, either to make an object move or to change matter 

B  force between surfaces that resists the motion of one surface past another surface; friction creates heat 

C  an object’s direction and speed 

D  Scientist who came up with 3 laws of motion; also the unit used to measure the amount of force applied 

For every action is there is an equal and opposite reaction.

Newton's 1st law

Newton's 2nd law

Newton's 3rd law

Newton's 4th law

The mathematical relationship between momentum, mass, and velocity is

momentum = velocity/mass

momentum = mass/velocity

momentum = mass x velocity

velocity = momentum + mass

If momentum is conserved, then the total momentum after a collision is equal to 

the momentum of the more massive object

the total momentum before the collision

the total force before the collision

the momentum of the faster object

Which of the following best show the mathematical relationship between force, mass, and acceleration.

Force = mass + acceleration

Force = mass x velocity

Force = mass x acceleration

Force = mass / acceleration

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