Science Bootcamp Assessment Practice

In science class, students are studying different mixtures. They are given a paper bag filled with a mixture of 2,000 iron spheres (1 millimeter in diameter) and 2,000 plastic spheres (also 1 millimeter in diameter). Which choice identifies the fastest method for separating the two types of spheres?

• Run a magnet over the mixture.

• Pass the mixture through a strainer.

• Pull out each bead from the mixture with tweezers.

Which action describes a chemical change caused by a change in temperature?

• boiling an egg in a pot

• freezing water to make ice

• dissolving salt in warm water

• mixing nuts and seeds in a cold bowl.

Students in a fifth-grade science class are given four different substances: sand, salt, metal washers, and plastic beads. They are asked to mix each substance with 200 milliliters (mL) of water and then describe the changes that take place. What evidence showed a chemical change in the water occurred?

• sand sinking in water

• metal washers rusting

• salt dissolving in water

• plastic beads floating on water

Tags

NGSS.MS-PS1-2

Students in a fifth-grade science class are given a basketball and asked to demonstrate different forms of energy with it. The following lists an action and a form of energy demonstrated.

Andrew threw the basketball up in the air - chemical energy

Hannah bounced the basketball - mechanical energy

Ivy rolled the basketball across the floor - chemical energy

Tucker kept the basketball sitting on a rack - mechanical energy

Which student correctly demonstrated the type of energy stated?

• Andrew

• Hannah

• Ivy

• Tucker

Melinda is pulling science books in her wagon. Once she starts moving the wagon, her brother pushes on the back end of the wagon. What effect does the brother's push most likely have on the motion of the wagon.

• The wagon will stop moving because there is more friction.

• The wagon will move faster because the net force is increased.

• The wagon will move slower because there is more air resistance.

• The wagon will change direction because a different force is being applied.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Connor is racing his remote control car down the sidewalk. Which choice identifies all of the energy transformations in the system?

• electrical - heat, sound, and motion

• electrical - sound and heat

• heat - electrical and sound

• heat and sound - motion

Tags

NGSS.MS-PS3-5

Pollinators are organisms that move pollen from flower to flower. Which parts of a flower are most likely to attract pollinators?

• egg

• petals

• pistils

• stamen

Tags

NGSS.MS-LS1-4

The pancreas has two functions. One function is to regulate blood sugar levels in the body. What is its other function?

• to absorb fat

• to digest protein, carbohydrates, and fat

• to help materials cross cellular membranes

• to carry nutrients to distant parts of the body.

Different organisms often have structures with similar functions. Which choice shows the comparison of the function of similar plant and human structures?

• stem and bones to support

• lungs and roots to water intake

• leaves and ears to sensing predators

• flowers and skin to protection from environment

Tags

NGSS.MS-LS4-2

A plant can release water from its leaves. It can control the rate at which this happens by opening or closing stomata, which are microscopic openings or pores in the surface of the leaf. Which part of the human body performs the most similar function?

• brain

• heart

• intestines

• skin