Heat
Why is electrical wiring usually made from copper? Because____________.
a. it is shiny
b. it conducts electricity.
c. it is not magnetic
d. it is strong
b. it conducts electricity.
A dove flies 60 meters in 10 seconds. What is the duck's speed?
a. 600m/s
b. 60 m/s
c. 6 m/s
d. 0.6 m/s
c. 6 m/s
Why is electrical wiring usually made from copper? Because____________.
a. it is shiny
b. it conducts electricity.
c. it is not magnetic
d. it is strong
b. it conducts electricity.
Which is the best means of heat transfer in solids?
a. radiation
b. convection
c. induction
d. conduction
d. conduction
A biker covers a distance of 150 km in 5 hours. What is the biker's average speed?
a. 15 km/h
b. 30 km/h
c. 45 km/h
d. 60km/h
b. 30 km/h
Which of the following is NOT a characteristic of a good conductor of electricity?
a) High resistance
b) Low resistance
c) Free movement of electrons
d) Ability to carry electric current
b) Low resistance
Which of the following materials is the best conductor of heat?
a) Wood
b) Glass
c) Metal
d) Plastic
c) Metal
Cyclist travels 40 km in 2 hours, what is the average speed?
a. 80 km/h
b. 60 km/h
c. 20 km/h
d. 10 km/h
c. 20 km/h
What is the primary method of electricity transfer in solids?
a) Conduction
b) Convection
c) Radiation
d) Absorption
a) Conduction
Which of the following is an example of conduction of heat?
a) A pot of water boiling on a stove
b) A hot air balloon rising in the sky
c) A person feeling warm when sitting near a fireplace
d) A light bulb emitting heat
c) A person feeling warm when sitting near a fireplace
You are racing cart down the hallway. if you move 10 m in 5 seconds. what is your speed?
a. 2 m/s
b. 2 miles/ hr.
c. 50 m/s
d. 5 m/s
a. 2 m/s
Which of the following materials is a good conductor of electricity?
a) Wood
b) Rubber
c) Copper
d) Plastic
c) Copper
What is the primary method of heat transfer in solids?
a) Conduction
b) Convection
c) Radiation
d) Absorption
b) Convection
Force is measured in which units?
a. degree
b. meter
c. gram
d. newton
d. newton
Which of the following is an example of conduction of heat?
a) Boiling water in a pot
b) Heat from the sun reaching the Earth
c) Touching a hot stove and feeling the heat
d) Heat from a fire spreading through a room
c) Touching a hot stove and feeling the heat