Homework Practice

Printable assignment

Heat, Motion and Electric Curiosity

Section A: Heat and Changes Around Us

Question 1mcq

Heat usually flows from:

A.Only upward

B.Only from metal to wood

C.A cooler object to a hotter object

D.A hotter object to a cooler object

Question 2mcq

Which material is usually a good conductor of heat?

A.Plastic

B.Wood

C.Rubber

D.Metal

Question 3mcq

Melting ice is an example of:

A.Physical change

B.No change

C.Rusting

D.Chemical change

Question 4mcq

Burning paper is an example of:

A.Melting

B.Freezing

C.Physical change

D.Chemical change

Question 5mcq

A thermometer is used to measure:

A.Speed

B.Weight

C.Length

D.Temperature

Question 6mcq

Sea breeze happens mainly because land and water heat:

A.Only at night

B.Only in winter

C.At different rates

D.At exactly the same rate

Section B: Motion, Electricity and Light

Question 7mcq

Speed is calculated using:

A.Time ÷ Distance

B.Distance ÷ Time

C.Mass ÷ Time

D.Distance × Time

Question 8mcq

A complete path for electric current is called a:

A.Magnet

B.Shadow

C.Lens

D.Circuit

Question 9mcq

Which device can open or close an electric circuit?

A.Thermometer

B.Switch

C.Mirror

D.Scale

Question 10mcq

A material that allows electric current to pass through easily is a:

A.Conductor

B.Filter

C.Shadow

D.Insulator

Question 11mcq

A mirror mainly reflects:

A.Light

B.Heat only

C.Smell

D.Sound

Question 12mcq

If a car travels 120 km in 3 hours, its speed is:

A.30 km/h

B.40 km/h

C.360 km/h

D.123 km/h