5) Many people take vitamin C when they feel they are catching a cold. In fact, some people seem to recover more quickly when they take C vitamins. What is the main problem with concluding vitamin C helps you fight off a cold based on this information?

We cannot know what other changes in diet people may have made while sick.

We cannot know exactly how vitamin C works.

We cannot keep track of how much vitamin C people take.

We cannot know how long the cold would have lasted without the vitamin C.

Tom is creating an experiment to see what food his pet lizard likes the best. He creates an experiment in which he offers his lizard a choice of crickets or mealworms. He records how much of each choice is eaten each day. At the end of two weeks, Tom finds the lizard has eaten a few more mealworms than crickets. What must Tom do to be sure his results are valid?

repeat the same experiment to confirm his results

include another food option besides crickets

buy additional lizards and begin multiple experiments

feed only mealworms for a while then offer a choice again

Erosion and weathering can both cause changes to the surface of Earth. Which of the following only happens because of erosion and not because of weathering?

rocks are moved from one place to another

rocks are broken into small pieces

The theory in which Earth's crust is divided into sections whose movements cause seismic activity along boundaries

conservation of mass and energy

Which of the following causes Earth's tectonic plates to move?

Convection currents in the mantle

Which best describes what a food chain shows you?

Energy flow through an ecosystem

Food flowing through an ecosystem

Consumers going into other consumers

7th Grade EOC Review

Authored by Elizabeth Ridgeway

Other, Other Sciences

6th - 8th Grade

Used 154+ times

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60 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Wind, water, and ice are often involved in weathering and erosion, which can cause changes on Earth. However, weathering and erosion are different processes. Which of the following statements best describes how these two processes differ?

Weathering is a much quicker process than erosion.

Weathering breaks rocks apart, while erosion moves rocks or sediment from place to place.

Weathering moves rocks and sediment from place to place, while erosion breaks rocks apart.

Weathering moves rocks without breaking them, while erosion breaks rocks apart before moving them.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Earth has a great variety of surface features that are caused by weathering and erosion. Which of the following describes a change due to weathering?

Ocean waves washing sand off the beach

Rivers carrying soil and rocks through valleys

Wind blowing sand and pebbles off of a sand dune

Tree roots breaking rocks into smaller pieces of rock

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The foods we eat provide energy. Which type of energy do we get from our food?

Heat

Electrical

Chemical

Mechanical

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Beth is conducting an experiment to determine how often she should fertilize her bean plants so they will grow quickly. She is going to test four plants as shown in the table. Which variable is Beth testing?

Brand of fertilizer used

Amount of fertilizer used

How often the plant is fertilized

Time of day the plants are fertilized

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Delilah followed these steps of an investigation:
1. Collect five objects made of different types of metal.
2. Place them on a large laboratory table.
3. Touch each metal object with a magnet and lift slowly.
4. Record observations.
Which of the following statements is Delilah most likely testing?

All types of metal are attracted to magnets.

Each magnet can lift the metal objects to the same height.

Larger magnets can pick up heavier metal objects than smaller magnets.

Heaver metal objects are more attracted to magnets than lighter metal objects are.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Frank uses a bowling ball to demonstrate how energy can cause changes. Which of the following actions would NOT demonstrate a change caused by applying energy to the ball?

He holds the bowling ball in both hands.

He spins the bowling ball with one hand.

He rolls the bowling ball across the floor.

He lifts the bowling ball to place iton a shelf.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Isabelle classified some objects as conductors or as insulators. She made this chart to organize and record her data. Which item is classified incorrectly?

Aluminum Foil

Paper Clip

Toothpick

Wooden Block

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7th Grade EOC Review

Wind, water, and ice are often involved in weathering and erosion, which can cause changes on Earth. However, weathering and erosion are different processes. Which of the following statements best describes how these two processes differ?

Earth has a great variety of surface features that are caused by weathering and erosion. Which of the following describes a change due to weathering?

The foods we eat provide energy. Which type of energy do we get from our food?

Beth is conducting an experiment to determine how often she should fertilize her bean plants so they will grow quickly. She is going to test four plants as shown in the table. Which variable is Beth testing?

Delilah followed these steps of an investigation:1. Collect five objects made of different types of metal.2. Place them on a large laboratory table.3. Touch each metal object with a magnet and lift slowly.4. Record observations.Which of the following statements is Delilah most likely testing?

Frank uses a bowling ball to demonstrate how energy can cause changes. Which of the following actions would NOT demonstrate a change caused by applying energy to the ball?

Isabelle classified some objects as conductors or as insulators. She made this chart to organize and record her data. Which item is classified incorrectly?

5) Many people take vitamin C when they feel they are catching a cold. In fact, some people seem to recover more quickly when they take C vitamins. What is the main problem with concluding vitamin C helps you fight off a cold based on this information?

Erosion and weathering can both cause changes to the surface of Earth. Which of the following only happens because of erosion and not because of weathering?

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Similar Resources on Wayground

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Discover more resources for Other

Delilah followed these steps of an investigation:
1. Collect five objects made of different types of metal.
2. Place them on a large laboratory table.
3. Touch each metal object with a magnet and lift slowly.
4. Record observations.
Which of the following statements is Delilah most likely testing?

5) Many people take vitamin C when they feel they are catching a cold. In fact, some people seem to recover more quickly when they take C vitamins.
What is the main problem with concluding vitamin C helps you fight off a cold based on this information?