Science Review

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

• All types of metal are attracted to magnets

• each magnet can lift the metal object to the same height

• larger magnets can pick up heavier metal objects than smaller magnets can

Dennis cannot scratch a mineral with his fingernail, but he observes that he can scratch the mineral sample with a piece of metal. What physical property of the mineral sample is Dennis investigating?

• cleavage

• hardness

• luster

• streak

A model of the water cycle was made using an aquarium with a glass cover, a container of ice cubes, water, and a lamp. Which part of the water cycle causes the water droplets to form on the glass cover?

• condensation

• evaporation

• precipitation

Kyle and Jan are comparing two samples of matter. They make a table of the properties of each sample. Which property provides the best evidence that both samples are solids rather than liquids?

• color

• mass

• shape

• volume

One morning Ryan noticed there were tiny droplets of water on the grass as he walked to school. That afternoon, he did not see any drops of water on the grass when he returned home. Which of the following best explains what happened to the drops of water?

• the air heat from the air caused the water droplets to boil

• the air cooled the water and caused the drops to freeze

• the Sun heated the water and caused the drops to evaporate

• the energy from the sun caused the drops to condense

Which of the following best explains why the rubber band makes a sound when Jason plucks it?

• it heats the air

• it vibrates the air

• it absorbs energy from the air

• it releases molecules into the air

An stem is an important part of many plants. Which of the following is most similar to the role performed by the stem of a plant?

• an anchor holding a boat in place

• a snack company producing energy bars

• a colorful sign attracting people into a store

• an elevator transporting supplies from one floor to another

Placing which of the following object at point X will cause the bar magnet to move away from point X?

• an iron nail

• an aluminum can

• the north end of another bar magnet

• the south end of another bar magnet

Which of the following is the beginning stage of the life cycle for both the butterfly and the grasshopper?

• egg

• larva

• nymph

• pupa

Loggerhead sea turtles are large turtles that live in the ocean and nest on the Florida coast. The female loggerhead sea turtle lays more than 100 eggs in the beach sand. How is laying so many eggs an important adaptation that helps these sea turtles survive?

• large nests of eggs help keep the eggs warm

• if the turtles hatch, they can help defend each other against predators

• the more eggs that are laid, the greater the chance that more turtles will live to become adults

• a large number of eggs in one place makes it possible for the mother to lay on the eggs until they hatch