Final FSA Science Review

Scientific explanations must always be linked to –

• evidence

• new theories

• common events

• controlled experiments

Some students tested five remote-controlled cars. They raced the cars on the smooth basketball court of the school playground. They started all of the cars at one end of the court at the same time. Car number 4 was the first one to reach the end of the race at the opposite end of the court. Which of the following questions can be answered by completing multiple trials of the race?

• What is the speed of car number 4?

• Is car number 4 really the fastest car?

• Will car number 4 win races with other race cars?

• How much bigger is car number 4 than the other cars?

Randy and Ana found a caterpillar in their garden. It had two little horn-like things on its head. Sometimes the horns stuck out. Sometimes the little horns went back into the head. Which of these was an opinion and not an observation they made?

• The caterpillar had many short legs.

• The caterpillar had orange and black spots.

• The caterpillar smelled bad when its horns were out.

• The caterpillar moved silently along a stem of parsley.

Which of these causes the phases of the Moon?

• The rotation of the Sun

• The rotation of Earth on its axis

• The revolution of Earth around the Sun

• The revolution of the Moon around Earth

The US Energy Information Administration produces reports on energy usage and sources in the United States. The following graph is from a 2018 report. According to this graph, about how much of the electricity generated in 2018 came from nonrenewable energy sources?

• More than 60%

• About 35%

• About 20%

• Less than 5%

The two pictures show the same beachfront. What has most likely caused the biggest change in the area?

• Erosion of rock by ice

• Weathering of rock by wind

• Erosion of sand by wave motions

• Weathering of rock by water waves

Jeff and Melinda tested the effects of different environmental conditions on Johnson grass plants. The picture shows the results of their experiment. Based on these results, which of these is the most reasonable prediction?

• Snowy environments will have the tallest grasses.

• Grasses will be very short during hot, dry summers.

• Some grasses will grow better in heat than other types of grasses.

• Tall grasses will be more affected by salt than short grasses.

  Check answer

The speed of Earth’s rotation at the equator is about 1,000 miles per hour. If Earth’s speed slowed to 900 miles per hour and all other factors remained constant, which of the following would most likely occur?

• The days would be longer.

• The years would be longer.

• The Moon would appear larger.

• The Sun would appear to be brighter.

A scientist was studying plant respiration in different plant tissues. The respiration rate is the amount of oxygen a gram of tissue uses in one hour. The table shows the results of the investigation. According to the results of this study, the lowest respiration rate will most likely be in a –

• peanut seed.

• sprouting peanut.

• growing peanut plant.

• flowering peanut plant.

  Check answer

Planets and moons are spherical objects in solar systems. Using a telescope, an astronomer sees a spherical object. The answer to which question will tell the astronomer if the object is a planet or a moon?

• What does the object orbit?

• Does the object have rocks?

• Does the object make its own light?

• Does the surface of the object look smooth?

  Check answer