Imagine that you are holding a cup of cold milk tea drink. Which of the following correctly describes the heat flow?

Heat flows from your hand to the cold milk tea drink.

Heat does not flow between your hand and the cold milk tea drink.

Heat flows from the cold milk tea drink to your hand.

The heat flow is determined by the temperature of the room.

Which of the following is an effect of global warming to the polar regions?

Melting of polar ice caps and glaciers

Expansion of polar ice caps and glaciers

Increase in polar bear population

Which of the following contributes to the greenhouse gases in the atmosphere?

Burning of fossil fuels, deforestation, and industrial processes

Planting more trees in urban areas

Use of renewable energy sources

How can an object be positively charged?

By losing electrons and gaining a net positive charge.

By gaining protons and becoming positively-charged

By being neutral and not having any charge.

By gaining electrons and gaining a net positive charge.

Two objects are charged by rubbing them against each other. Which of the following is true regarding their charges after the process?

One will be positive while the other will be negative.

Both will be positively charged.

Both will be negatively charged.

A ball is charged by allowing it to come very near (but not touching) a positively-charged rod. What will be the charge of the ball after the process?

The ball will have a negative charge.

The ball will have a magnetic charge.

The ball will have a neutral charge.

The ball will have a positive charge.

A stick is charged by placing it in direct contact with a positively charged ball. What is the charge of the stick after the process?

The stick will have a positive charge.

The stick will have a negative charge.

The stick will have a neutral charge.

The stick will have a magnetic charge.

Which of the following is the function of the Earth pin or ground pin in an electric plug?

To provide a path for the current to flow to the ground in case of a fault, preventing electric shock or fire hazards.

To supply electricity to the device

To improve the signal strength of the electrical current

To provide extra power to the device

Review: Light, Heat, Electricity

Quiz

•

Science

•

7th Grade

•

Practice Problem

•

Easy

Michael Jayoma

Used 8+ times

FREE Resource

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7.

FILL IN THE BLANK QUESTION

1 min • 1 pt

The color of light that carries the highest amount of energy is:

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