How does resistance affect current?

resistance does not affect current

What are the 7 colors of the visible light spectrum in order of decreasing wavelength?

Red, orange, yellow, green, blue, indigo, violet

Violet, indigo, blue, green, yellow, orange, red

Red, yellow, orange, blue, green, violet, indigo

Blue, indigo, violet, green, red, orange, yellow

In general, which types of materials transmit sounds most quickly?

Solids, then liquids, then gases

Solids, then gases, then liquids

Gases, then liquids, then solids

Gases, then solids, then liquids

Which statement best compares these two waves?

Wave 2 has more energy because it has a higher amplitude than wave 1

Wave 1 has a higher frequency because it has a longer wavelength than wave 2

Wave 1 has a higher frequency because it has a longer amplitude than wave 2

Wave 2 has more energy because it has a higher frequency than wave 1

During an investigation, a teacher places a small permanent magnet with a hole in it onto a wooden rod. The magnet can slide freely up and down the rod. When the teacher places the magnet and rod on a tabletop above an electromagnet, the magnet slides up the rod as shown in the diagram. A student measures how far the magnet slides up the rod each time the teacher adds an additional battery to the electromagnet. Which question could most likely be answered by this investigation?

How does the amount of the electric current affect the distance the magnet travels up the rod?

How does the size of the magnet affect the distance the magnet travels up the rod?

How does the distance between the magnet and the electromagnet affect the strength of the magnetic force of the electromagnet?

How does the direction of the electric current affect the strength of the magnetic force of the electromagnet?

The diagram shows an electromagnetic spectrum. Based on the information shown, which statement is not true?

Ultraviolet waves have a longer wavelength than visible light.

Ultraviolet waves occur at a higher frequency than Infrared waves.

Gamma Rays have the shortest wavelength of all wave types.

Visible light waves carry more energy than microwaves.

This diagram models a sound wave from a car horn hitting a wall. According to the model, which statement best describes what happens to the sound energy when the sound wave hits the wall?

Ten percent of the sound energy is absorbed by the wall.

Thirty percent of the sound energy is absorbed by the wall.

Eighty percent of the sound energy is reflected by the wall.

Eighty percent of the sound energy passes through the wall.

A student created an electromagnet out of a piece of copper wire, a nail, and a battery, as shown. The student observed that the electromagnet could not lift paper clips off a desktop as expected. Which hypothesis will most likely help the student build an electromagnet capable of lifting paper clips?

Adding more coils of copper wire to the nail will increase the number of paper clips that the electromagnet can pick up.

Using a wooden stick instead of a nail will increase the number of paper clips that the electromagnet can pick up.

Pushing the coils of copper wire closer together will increase the number of paper clips that the electromagnet can pick up.

Using a battery that produces less electric current will increase the number of paper clips that the electromagnet can pick up.

This graph represents sound waves generated by a vibrating string at two energy levels. Which statement best describes the difference in energy between Wave X and Wave Y?

The energy of Wave Y is 16 times greater than the energy of Wave X.

The energy of Wave Y is 4 times less than the energy of Wave X.

The energy of Wave Y is 4 times greater than the energy of Wave X.

The energy of Wave Y is 16 times less than the energy of Wave X.

A group of students is using resistors to investigate energy changes in electrical circuits. The group builds an electrical circuit using batteries, a switch, and a 10-ohm resistor. A schematic of their circuit is shown. Next, the group builds a similar circuit using a 15-ohm resistor. The group places a thermometer on each resistor. They record initial temperature measurements and then close both switches. After 5 minutes, the group records final temperature measurements. Data collected during this investigation is shown in Table 1. Which claim is supported by both scientific reasoning and evidence obtained in this investigation?

When the kinetic energy of an object changes, energy is transferred to or from the object.

When the thermal energy of an object changes, energy has been created or destroyed.

When the electrical energy of an object changes, energy has been created or destroyed.

When the potential energy of an object changes, energy is transferred to or from the object.

Students are researching what colors of visible light that different animals are able to see. They are given the following portion of the electromagnetic spectrum to aid in their research. Nina has chosen to research bumblebees. Her research shows that bumblebees can see wavelengths ranging from 400-600 nanometers. Based on this information, what could Nina conclude about the sight of bumblebees?

Bumblebees see every color but red.

Bumblebees only see violet and blue.

Bumblebees only see green and yellow.

Bumblebees see every color but violet.

Look at the picture. Why won't the light bulb light up?

The switch is not closed to form a complete circuit

The wires from the light bulb are not connected to the battery

The wires from the light bulb are not connected to the switch

The wires from the battery are not connected to the switch

EWITS 9 Weeks Exam Review

8th Grade

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65 Qs

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EWITS 9 Weeks Exam Review

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS4-1, MS-PS4-2, 4-PS3-2

Standards-aligned

Yvette Akridge

Used 60+ times

FREE Resource

65 questions

Show all answers

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

A battery or other device which provides energy for a circuit is called a _______.

Conductor

Power source

Parallel circuit

Complete circuit

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

When different currents flow through each resistor it is called a ________.

Pathway

Conductor

Series circuit

Parallel circuit

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The flow of electricity through a conductor is called _______.

Battery

Current

Static electricity

Switch

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Open circuit

Closed circuit

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This is an example of a ______ circuit

Series

Parallel

Open

Dihexihedral

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A negatively charged subatomic particle is called __________

neutron

proton

electron

parteon

A positively charged subatomic particle is called __________

neutron

proton

electron

parteon

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EWITS 9 Weeks Exam Review

65 questions

A battery or other device which provides energy for a circuit is called a _______.

When different currents flow through each resistor it is called a ________.

The flow of electricity through a conductor is called _______.

This is an example of a ______ circuit

A negatively charged subatomic particle is called __________

A positively charged subatomic particle is called __________

A student began building a circuit to light a bulb. What else does the student need to produce light?

An incomplete circuit is shown.
To complete the circuit, a wire should be placed from —

Which of the following can work as an energy source?

Create a free account and access millions of resources

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EWITS 9 Weeks Exam Review

65 questions

A battery or other device which provides energy for a circuit is called a _______.

When different currents flow through each resistor it is called a ________.

The flow of electricity through a conductor is called _______.

This is an example of a ______ circuit

A negatively charged subatomic particle is called __________

A positively charged subatomic particle is called __________

A student began building a circuit to light a bulb. What else does the student need to produce light?

An incomplete circuit is shown.To complete the circuit, a wire should be placed from —

Which of the following can work as an energy source?

Create a free account and access millions of resources

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An incomplete circuit is shown.
To complete the circuit, a wire should be placed from —